<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<link:linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <link:roleRef roleURI="http://tejonranch.com/role/AccruedLiabilitiesAndOther" xlink:href="trc-20191231.xsd#AccruedLiabilitiesAndOther" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/AccruedLiabilitiesAndOtherDetails" xlink:href="trc-20191231.xsd#AccruedLiabilitiesAndOtherDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/AccruedLiabilitiesAndOtherTables" xlink:href="trc-20191231.xsd#AccruedLiabilitiesAndOtherTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/CommitmentsAndContingencies" xlink:href="trc-20191231.xsd#CommitmentsAndContingencies" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/CommitmentsAndContingenciesDetails" xlink:href="trc-20191231.xsd#CommitmentsAndContingenciesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/ConsolidatedBalanceSheets" xlink:href="trc-20191231.xsd#ConsolidatedBalanceSheets" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:href="trc-20191231.xsd#ConsolidatedBalanceSheetsParenthetical" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/ConsolidatedStatementsOfCashFlows" xlink:href="trc-20191231.xsd#ConsolidatedStatementsOfCashFlows" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/ConsolidatedStatementsOfCashFlowsParenthetical" xlink:href="trc-20191231.xsd#ConsolidatedStatementsOfCashFlowsParenthetical" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/ConsolidatedStatementsOfComprehensiveIncomeLoss" xlink:href="trc-20191231.xsd#ConsolidatedStatementsOfComprehensiveIncomeLoss" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/ConsolidatedStatementsOfEquity" xlink:href="trc-20191231.xsd#ConsolidatedStatementsOfEquity" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/ConsolidatedStatementsOfOperations" xlink:href="trc-20191231.xsd#ConsolidatedStatementsOfOperations" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/DocumentAndEntityInformation" xlink:href="trc-20191231.xsd#DocumentAndEntityInformation" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/Equity" xlink:href="trc-20191231.xsd#Equity" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/EquityAdditionalInformationDetails" xlink:href="trc-20191231.xsd#EquityAdditionalInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/EquityEarningsPerShareEpsDetails" xlink:href="trc-20191231.xsd#EquityEarningsPerShareEpsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/EquityTables" xlink:href="trc-20191231.xsd#EquityTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/IncomeTaxes" xlink:href="trc-20191231.xsd#IncomeTaxes" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/IncomeTaxesAdditionalInformationDetails" xlink:href="trc-20191231.xsd#IncomeTaxesAdditionalInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/IncomeTaxesComponentsOfNetDeferredTaxAssetsAndLiabilitiesDetails" xlink:href="trc-20191231.xsd#IncomeTaxesComponentsOfNetDeferredTaxAssetsAndLiabilitiesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/IncomeTaxesComponentsOfProvisionBenefitForIncomeTaxesDetails" xlink:href="trc-20191231.xsd#IncomeTaxesComponentsOfProvisionBenefitForIncomeTaxesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/IncomeTaxesReconciliationOfIncomeTaxExpenseFromStatutoryFederalIncomeTaxRateDetails" xlink:href="trc-20191231.xsd#IncomeTaxesReconciliationOfIncomeTaxExpenseFromStatutoryFederalIncomeTaxRateDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/IncomeTaxesTables" xlink:href="trc-20191231.xsd#IncomeTaxesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/InterestRateSwap" xlink:href="trc-20191231.xsd#InterestRateSwap" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/InterestRateSwapDetails" xlink:href="trc-20191231.xsd#InterestRateSwapDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/InterestRateSwapTables" xlink:href="trc-20191231.xsd#InterestRateSwapTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/Inventories" xlink:href="trc-20191231.xsd#Inventories" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/InventoriesDetails" xlink:href="trc-20191231.xsd#InventoriesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/InventoriesTables" xlink:href="trc-20191231.xsd#InventoriesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/InvestmentInUnconsolidatedAndConsolidatedJointVentures" xlink:href="trc-20191231.xsd#InvestmentInUnconsolidatedAndConsolidatedJointVentures" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/InvestmentInUnconsolidatedAndConsolidatedJointVenturesAdditionalInformationDetails" xlink:href="trc-20191231.xsd#InvestmentInUnconsolidatedAndConsolidatedJointVenturesAdditionalInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/InvestmentInUnconsolidatedAndConsolidatedJointVenturesCondensedStatementsOfOperationsAndBalanceSheetInformationDetails" xlink:href="trc-20191231.xsd#InvestmentInUnconsolidatedAndConsolidatedJointVenturesCondensedStatementsOfOperationsAndBalanceSheetInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/InvestmentInUnconsolidatedAndConsolidatedJointVenturesTables" xlink:href="trc-20191231.xsd#InvestmentInUnconsolidatedAndConsolidatedJointVenturesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/Leases" xlink:href="trc-20191231.xsd#Leases" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/LeasesDetails" xlink:href="trc-20191231.xsd#LeasesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/LeasesTables" xlink:href="trc-20191231.xsd#LeasesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/LineOfCreditAndLongTermDebt" xlink:href="trc-20191231.xsd#LineOfCreditAndLongTermDebt" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/LineOfCreditAndLongTermDebtAdditionalInformationDetails" xlink:href="trc-20191231.xsd#LineOfCreditAndLongTermDebtAdditionalInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/LineOfCreditAndLongTermDebtComponentsOfDebtDetails" xlink:href="trc-20191231.xsd#LineOfCreditAndLongTermDebtComponentsOfDebtDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/LineOfCreditAndLongTermDebtOutstandingIndebtednessAndRespectivePrincipalMaturitiesDetails" xlink:href="trc-20191231.xsd#LineOfCreditAndLongTermDebtOutstandingIndebtednessAndRespectivePrincipalMaturitiesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/LineOfCreditAndLongTermDebtTables" xlink:href="trc-20191231.xsd#LineOfCreditAndLongTermDebtTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/LongTermWaterAssets" xlink:href="trc-20191231.xsd#LongTermWaterAssets" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/LongTermWaterAssetsAdditionalInformationDetails" xlink:href="trc-20191231.xsd#LongTermWaterAssetsAdditionalInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/LongTermWaterAssetsIntangibleWaterAssetsDetails" xlink:href="trc-20191231.xsd#LongTermWaterAssetsIntangibleWaterAssetsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/LongTermWaterAssetsRevenuesAndCostOfSalesDetails" xlink:href="trc-20191231.xsd#LongTermWaterAssetsRevenuesAndCostOfSalesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/LongTermWaterAssetsTables" xlink:href="trc-20191231.xsd#LongTermWaterAssetsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/LongTermWaterAssetsTangibleWaterAssetsDetails" xlink:href="trc-20191231.xsd#LongTermWaterAssetsTangibleWaterAssetsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/LongTermWaterAssetsVolumeOfWaterAssetsDetails" xlink:href="trc-20191231.xsd#LongTermWaterAssetsVolumeOfWaterAssetsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/MarketableSecurities" xlink:href="trc-20191231.xsd#MarketableSecurities" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/MarketableSecuritiesAdditionalInformationDetails" xlink:href="trc-20191231.xsd#MarketableSecuritiesAdditionalInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/MarketableSecuritiesAvailableForSaleSecuritiesByMaturitiesDetails" xlink:href="trc-20191231.xsd#MarketableSecuritiesAvailableForSaleSecuritiesByMaturitiesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/MarketableSecuritiesSummaryOfAvailableForSaleSecuritiesDetails" xlink:href="trc-20191231.xsd#MarketableSecuritiesSummaryOfAvailableForSaleSecuritiesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/MarketableSecuritiesTables" xlink:href="trc-20191231.xsd#MarketableSecuritiesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/OtherLiabilities" xlink:href="trc-20191231.xsd#OtherLiabilities" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/OtherLiabilitiesDetails" xlink:href="trc-20191231.xsd#OtherLiabilitiesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/OtherLiabilitiesTables" xlink:href="trc-20191231.xsd#OtherLiabilitiesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/RealEstate" xlink:href="trc-20191231.xsd#RealEstate" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/RealEstateScheduleOfRealEstateDetails" xlink:href="trc-20191231.xsd#RealEstateScheduleOfRealEstateDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/RealEstateTables" xlink:href="trc-20191231.xsd#RealEstateTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/RelatedPartyTransactions" xlink:href="trc-20191231.xsd#RelatedPartyTransactions" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/RelatedPartyTransactionsNarrativeDetails" xlink:href="trc-20191231.xsd#RelatedPartyTransactionsNarrativeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/ReportingSegmentsAndRelatedInformation" xlink:href="trc-20191231.xsd#ReportingSegmentsAndRelatedInformation" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/ReportingSegmentsAndRelatedInformationAdditionalInformationDetails" xlink:href="trc-20191231.xsd#ReportingSegmentsAndRelatedInformationAdditionalInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/ReportingSegmentsAndRelatedInformationInformationPertainingToAssetsOfSegmentsDetails" xlink:href="trc-20191231.xsd#ReportingSegmentsAndRelatedInformationInformationPertainingToAssetsOfSegmentsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/ReportingSegmentsAndRelatedInformationReconciliationOfRevenuesSegmentProfitsLossesAndNetIncomeLossDetails" xlink:href="trc-20191231.xsd#ReportingSegmentsAndRelatedInformationReconciliationOfRevenuesSegmentProfitsLossesAndNetIncomeLossDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/ReportingSegmentsAndRelatedInformationRevenueComponentsOfFarmingSegmentsDetails" xlink:href="trc-20191231.xsd#ReportingSegmentsAndRelatedInformationRevenueComponentsOfFarmingSegmentsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/ReportingSegmentsAndRelatedInformationRevenueComponentsOfMineralResourcesSegmentDetails" xlink:href="trc-20191231.xsd#ReportingSegmentsAndRelatedInformationRevenueComponentsOfMineralResourcesSegmentDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/ReportingSegmentsAndRelatedInformationRevenueComponentsOfRanchOperationsDetails" xlink:href="trc-20191231.xsd#ReportingSegmentsAndRelatedInformationRevenueComponentsOfRanchOperationsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/ReportingSegmentsAndRelatedInformationRevenueComponentsOfRealEstateSegmentsDetails" xlink:href="trc-20191231.xsd#ReportingSegmentsAndRelatedInformationRevenueComponentsOfRealEstateSegmentsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/ReportingSegmentsAndRelatedInformationTables" xlink:href="trc-20191231.xsd#ReportingSegmentsAndRelatedInformationTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/RetirementPlans" xlink:href="trc-20191231.xsd#RetirementPlans" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/RetirementPlansAdditionalInformationDetails" xlink:href="trc-20191231.xsd#RetirementPlansAdditionalInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/RetirementPlansAmountsExpectedToBeRecognizedAsComponentsOfNetPeriodicPensionCostsDetails" xlink:href="trc-20191231.xsd#RetirementPlansAmountsExpectedToBeRecognizedAsComponentsOfNetPeriodicPensionCostsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/RetirementPlansChangeInBenefitObligationsAndPlanAssetsDetails" xlink:href="trc-20191231.xsd#RetirementPlansChangeInBenefitObligationsAndPlanAssetsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/RetirementPlansChangesInPlanAssetsAndBenefitObligationsRecognizedInOtherComprehensiveIncomeDetails" xlink:href="trc-20191231.xsd#RetirementPlansChangesInPlanAssetsAndBenefitObligationsRecognizedInOtherComprehensiveIncomeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/RetirementPlansExpectedAnnualBenefitPaymentsDetails" xlink:href="trc-20191231.xsd#RetirementPlansExpectedAnnualBenefitPaymentsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/RetirementPlansFairValueOfPlanAssetsByInvestmentTypeDetails" xlink:href="trc-20191231.xsd#RetirementPlansFairValueOfPlanAssetsByInvestmentTypeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/RetirementPlansNetPeriodicPensionCostPensionPlanDetails" xlink:href="trc-20191231.xsd#RetirementPlansNetPeriodicPensionCostPensionPlanDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/RetirementPlansRetirementPlansNetPeriodicPensionCostSerpDetails" xlink:href="trc-20191231.xsd#RetirementPlansRetirementPlansNetPeriodicPensionCostSerpDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/RetirementPlansTables" xlink:href="trc-20191231.xsd#RetirementPlansTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/StockCompensationRestrictedStockAndPerformanceShareGrants" xlink:href="trc-20191231.xsd#StockCompensationRestrictedStockAndPerformanceShareGrants" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/StockCompensationRestrictedStockAndPerformanceShareGrantsAdditionalInformationDetails" xlink:href="trc-20191231.xsd#StockCompensationRestrictedStockAndPerformanceShareGrantsAdditionalInformationDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/StockCompensationRestrictedStockAndPerformanceShareGrantsCompensationCostsDetails" xlink:href="trc-20191231.xsd#StockCompensationRestrictedStockAndPerformanceShareGrantsCompensationCostsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/StockCompensationRestrictedStockAndPerformanceShareGrantsPerformanceShareGrantsDetails" xlink:href="trc-20191231.xsd#StockCompensationRestrictedStockAndPerformanceShareGrantsPerformanceShareGrantsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/StockCompensationRestrictedStockAndPerformanceShareGrantsStockGrantActivityDetails" xlink:href="trc-20191231.xsd#StockCompensationRestrictedStockAndPerformanceShareGrantsStockGrantActivityDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/StockCompensationRestrictedStockAndPerformanceShareGrantsTables" xlink:href="trc-20191231.xsd#StockCompensationRestrictedStockAndPerformanceShareGrantsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/SummaryOfSignificantAccountingPolicies" xlink:href="trc-20191231.xsd#SummaryOfSignificantAccountingPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/SummaryOfSignificantAccountingPoliciesCompanyDetails" xlink:href="trc-20191231.xsd#SummaryOfSignificantAccountingPoliciesCompanyDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/SummaryOfSignificantAccountingPoliciesCreditRiskDetails" xlink:href="trc-20191231.xsd#SummaryOfSignificantAccountingPoliciesCreditRiskDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/SummaryOfSignificantAccountingPoliciesEnvironmentalExpendituresDetails" xlink:href="trc-20191231.xsd#SummaryOfSignificantAccountingPoliciesEnvironmentalExpendituresDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:href="trc-20191231.xsd#SummaryOfSignificantAccountingPoliciesPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/SummaryOfSignificantAccountingPoliciesPropertyAndEquipmentDetails" xlink:href="trc-20191231.xsd#SummaryOfSignificantAccountingPoliciesPropertyAndEquipmentDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/SummaryOfSignificantAccountingPoliciesRecentlyAdoptedAccountingPronouncementsDetails" xlink:href="trc-20191231.xsd#SummaryOfSignificantAccountingPoliciesRecentlyAdoptedAccountingPronouncementsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/SummaryOfSignificantAccountingPoliciesTables" xlink:href="trc-20191231.xsd#SummaryOfSignificantAccountingPoliciesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/SummaryOfSignificantAccountingPoliciesVineyardsAndOrchardsDetails" xlink:href="trc-20191231.xsd#SummaryOfSignificantAccountingPoliciesVineyardsAndOrchardsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/UnauditedQuarterlyOperatingResults" xlink:href="trc-20191231.xsd#UnauditedQuarterlyOperatingResults" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/UnauditedQuarterlyOperatingResultsDetails" xlink:href="trc-20191231.xsd#UnauditedQuarterlyOperatingResultsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tejonranch.com/role/UnauditedQuarterlyOperatingResultsTables" xlink:href="trc-20191231.xsd#UnauditedQuarterlyOperatingResultsTables" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" xlink:type="simple" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/AccruedLiabilitiesAndOther" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/AccruedLiabilitiesAndOtherDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/AccruedLiabilitiesAndOtherTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/CommitmentsAndContingencies" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/CommitmentsAndContingenciesDetails" xlink:type="extended">
    <link:loc xlink:href="trc-20191231.xsd#trc_CommitmentAndContingenciesDisclosureLineItems" xlink:label="loc_trc_CommitmentAndContingenciesDisclosureLineItems_358E47A4ACBEF3DCAFC1C50B2FA44542" xlink:type="locator" />
    <link:loc xlink:href="trc-20191231.xsd#trc_CommitmentsAndContingenciesDisclosureTable" xlink:label="loc_trc_CommitmentsAndContingenciesDisclosureTable_E6B0BF1B18F248CC22F9C50B2F9FF948" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_trc_CommitmentAndContingenciesDisclosureLineItems_358E47A4ACBEF3DCAFC1C50B2FA44542" xlink:to="loc_trc_CommitmentsAndContingenciesDisclosureTable_E6B0BF1B18F248CC22F9C50B2F9FF948" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_CounterpartyNameAxis" xlink:label="loc_srt_CounterpartyNameAxis_6011CAEBBB6FC40A8592C50B2F9F252A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_trc_CommitmentsAndContingenciesDisclosureTable_E6B0BF1B18F248CC22F9C50B2F9FF948" xlink:to="loc_srt_CounterpartyNameAxis_6011CAEBBB6FC40A8592C50B2F9F252A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_60E7D23394A9D3A11072C50B2FA0DD37_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_6011CAEBBB6FC40A8592C50B2F9F252A" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_60E7D23394A9D3A11072C50B2FA0DD37_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_60E7D23394A9D3A11072C50B2FA0DD37" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_6011CAEBBB6FC40A8592C50B2F9F252A" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_60E7D23394A9D3A11072C50B2FA0DD37" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_DMBPacificLLCMember" xlink:label="loc_trc_DMBPacificLLCMember_1081A5BBF593205784D5C50B2FA0980A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_60E7D23394A9D3A11072C50B2FA0DD37" xlink:to="loc_trc_DMBPacificLLCMember_1081A5BBF593205784D5C50B2FA0980A" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_KernCountyWaterAgencyMember" xlink:label="loc_trc_KernCountyWaterAgencyMember_DC5349809B3D3A87DAC0C50B2FA0F9AF" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_60E7D23394A9D3A11072C50B2FA0DD37" xlink:to="loc_trc_KernCountyWaterAgencyMember_DC5349809B3D3A87DAC0C50B2FA0F9AF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_030C236097B6D0A408ACC50B2FA0102C" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_trc_CommitmentsAndContingenciesDisclosureTable_E6B0BF1B18F248CC22F9C50B2F9FF948" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_030C236097B6D0A408ACC50B2FA0102C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleNameDomain" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_8AE94405E3C92E8715E4C50B2FA189A7_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_030C236097B6D0A408ACC50B2FA0102C" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_8AE94405E3C92E8715E4C50B2FA189A7_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleNameDomain" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_8AE94405E3C92E8715E4C50B2FA189A7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_030C236097B6D0A408ACC50B2FA0102C" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_8AE94405E3C92E8715E4C50B2FA189A7" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TransferableWaterMember" xlink:label="loc_trc_TransferableWaterMember_40586363EDB12F0E0997C50B2FA134CB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_8AE94405E3C92E8715E4C50B2FA189A7" xlink:to="loc_trc_TransferableWaterMember_40586363EDB12F0E0997C50B2FA134CB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:label="loc_us-gaap_CreditFacilityAxis_9064D6AC70B3C7BAB770C50B2FA15C97" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_trc_CommitmentsAndContingenciesDisclosureTable_E6B0BF1B18F248CC22F9C50B2F9FF948" xlink:to="loc_us-gaap_CreditFacilityAxis_9064D6AC70B3C7BAB770C50B2FA15C97" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="loc_us-gaap_CreditFacilityDomain_6CB63BD8EF13986CC515C50B2FA16DF7_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_9064D6AC70B3C7BAB770C50B2FA15C97" xlink:to="loc_us-gaap_CreditFacilityDomain_6CB63BD8EF13986CC515C50B2FA16DF7_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="loc_us-gaap_CreditFacilityDomain_6CB63BD8EF13986CC515C50B2FA16DF7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_9064D6AC70B3C7BAB770C50B2FA15C97" xlink:to="loc_us-gaap_CreditFacilityDomain_6CB63BD8EF13986CC515C50B2FA16DF7" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_WestCommunityFacilitiesDistrictsMember" xlink:label="loc_trc_WestCommunityFacilitiesDistrictsMember_BBEF9EF6A3CD0B2A76B9C50B2FA29634" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_6CB63BD8EF13986CC515C50B2FA16DF7" xlink:to="loc_trc_WestCommunityFacilitiesDistrictsMember_BBEF9EF6A3CD0B2A76B9C50B2FA29634" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_EastCommunityFacilitiesDistrictsMember" xlink:label="loc_trc_EastCommunityFacilitiesDistrictsMember_6BD97AE25C985B2766FCC50B2FA2CF6D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_6CB63BD8EF13986CC515C50B2FA16DF7" xlink:to="loc_trc_EastCommunityFacilitiesDistrictsMember_6BD97AE25C985B2766FCC50B2FA2CF6D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StandbyLettersOfCreditMember" xlink:label="loc_us-gaap_StandbyLettersOfCreditMember_0D46EC3E99773B13A693C50B2FA23A88" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_6CB63BD8EF13986CC515C50B2FA16DF7" xlink:to="loc_us-gaap_StandbyLettersOfCreditMember_0D46EC3E99773B13A693C50B2FA23A88" xlink:type="arc" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_CEC60F02FBC11110E7CDC50B2FA27BDE" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_trc_CommitmentsAndContingenciesDisclosureTable_E6B0BF1B18F248CC22F9C50B2F9FF948" xlink:to="loc_dei_LegalEntityAxis_CEC60F02FBC11110E7CDC50B2FA27BDE" xlink:type="arc" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_C81D833C09973469ED05C50B2FA2B3D9_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_CEC60F02FBC11110E7CDC50B2FA27BDE" xlink:to="loc_dei_EntityDomain_C81D833C09973469ED05C50B2FA2B3D9_default" xlink:type="arc" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_C81D833C09973469ED05C50B2FA2B3D9" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_CEC60F02FBC11110E7CDC50B2FA27BDE" xlink:to="loc_dei_EntityDomain_C81D833C09973469ED05C50B2FA2B3D9" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TejonCastacWaterDistrictMember" xlink:label="loc_trc_TejonCastacWaterDistrictMember_EE16C3E1997D3122F796C50B2FA3D174" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_C81D833C09973469ED05C50B2FA2B3D9" xlink:to="loc_trc_TejonCastacWaterDistrictMember_EE16C3E1997D3122F796C50B2FA3D174" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LitigationStatusAxis" xlink:label="loc_us-gaap_LitigationStatusAxis_7762099F0EB754A9C9F8C50B2FA328F7" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_trc_CommitmentsAndContingenciesDisclosureTable_E6B0BF1B18F248CC22F9C50B2F9FF948" xlink:to="loc_us-gaap_LitigationStatusAxis_7762099F0EB754A9C9F8C50B2FA328F7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LitigationStatusDomain" xlink:label="loc_us-gaap_LitigationStatusDomain_F278468EE633E1F20428C50B2FA3B73B_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LitigationStatusAxis_7762099F0EB754A9C9F8C50B2FA328F7" xlink:to="loc_us-gaap_LitigationStatusDomain_F278468EE633E1F20428C50B2FA3B73B_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LitigationStatusDomain" xlink:label="loc_us-gaap_LitigationStatusDomain_F278468EE633E1F20428C50B2FA3B73B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LitigationStatusAxis_7762099F0EB754A9C9F8C50B2FA328F7" xlink:to="loc_us-gaap_LitigationStatusDomain_F278468EE633E1F20428C50B2FA3B73B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SettledLitigationMember" xlink:label="loc_us-gaap_SettledLitigationMember_FBC1EEC0954DE88FEFB1C50B2FA34B5B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LitigationStatusDomain_F278468EE633E1F20428C50B2FA3B73B" xlink:to="loc_us-gaap_SettledLitigationMember_FBC1EEC0954DE88FEFB1C50B2FA34B5B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_LitigationCaseAxis" xlink:label="loc_srt_LitigationCaseAxis_EB2C4F74826B76084A88C50B2FA46A99" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_trc_CommitmentsAndContingenciesDisclosureTable_E6B0BF1B18F248CC22F9C50B2F9FF948" xlink:to="loc_srt_LitigationCaseAxis_EB2C4F74826B76084A88C50B2FA46A99" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:label="loc_srt_LitigationCaseTypeDomain_3F7BDD072900491BFEC8C50B2FA4161F_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_LitigationCaseAxis_EB2C4F74826B76084A88C50B2FA46A99" xlink:to="loc_srt_LitigationCaseTypeDomain_3F7BDD072900491BFEC8C50B2FA4161F_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:label="loc_srt_LitigationCaseTypeDomain_3F7BDD072900491BFEC8C50B2FA4161F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_LitigationCaseAxis_EB2C4F74826B76084A88C50B2FA46A99" xlink:to="loc_srt_LitigationCaseTypeDomain_3F7BDD072900491BFEC8C50B2FA4161F" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_AntelopeValleyGroundwaterCasesMember" xlink:label="loc_trc_AntelopeValleyGroundwaterCasesMember_B0B623DE3F3895A82F1CC50B2FA49C0D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_3F7BDD072900491BFEC8C50B2FA4161F" xlink:to="loc_trc_AntelopeValleyGroundwaterCasesMember_B0B623DE3F3895A82F1CC50B2FA49C0D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RepaymentsOfLongTermCapitalLeaseObligations" xlink:label="loc_us-gaap_RepaymentsOfLongTermCapitalLeaseObligations_F8CBF4F84192DC5BDFEBC50B2FA4DF64" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_CommitmentAndContingenciesDisclosureLineItems_358E47A4ACBEF3DCAFC1C50B2FA44542" xlink:to="loc_us-gaap_RepaymentsOfLongTermCapitalLeaseObligations_F8CBF4F84192DC5BDFEBC50B2FA4DF64" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LongTermWaterAssetsContractRenewalOptionalTerm" xlink:label="loc_trc_LongTermWaterAssetsContractRenewalOptionalTerm_3A503B999A55978139B7C50B2FA5308F" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_CommitmentAndContingenciesDisclosureLineItems_358E47A4ACBEF3DCAFC1C50B2FA44542" xlink:to="loc_trc_LongTermWaterAssetsContractRenewalOptionalTerm_3A503B999A55978139B7C50B2FA5308F" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LongtermWaterAssetsVolume" xlink:label="loc_trc_LongtermWaterAssetsVolume_9D9D19D90841EC256A26C50B2FA5CDF6" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_CommitmentAndContingenciesDisclosureLineItems_358E47A4ACBEF3DCAFC1C50B2FA44542" xlink:to="loc_trc_LongtermWaterAssetsVolume_9D9D19D90841EC256A26C50B2FA5CDF6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractualObligation" xlink:label="loc_us-gaap_ContractualObligation_63FB349409D38F1FC063C50B2FA58BCC" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_CommitmentAndContingenciesDisclosureLineItems_358E47A4ACBEF3DCAFC1C50B2FA44542" xlink:to="loc_us-gaap_ContractualObligation_63FB349409D38F1FC063C50B2FA58BCC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCommitment" xlink:label="loc_us-gaap_OtherCommitment_9C40BA4C3D8063597034C50B2FA5CA11" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_CommitmentAndContingenciesDisclosureLineItems_358E47A4ACBEF3DCAFC1C50B2FA44542" xlink:to="loc_us-gaap_OtherCommitment_9C40BA4C3D8063597034C50B2FA5CA11" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_ContractTerminationIncentiveFeeCalculationMeasurementPeriodFromEntitlementAchievementDate" xlink:label="loc_trc_ContractTerminationIncentiveFeeCalculationMeasurementPeriodFromEntitlementAchievementDate_8B9C6A9309406061A301C50B2FA521E6" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_CommitmentAndContingenciesDisclosureLineItems_358E47A4ACBEF3DCAFC1C50B2FA44542" xlink:to="loc_trc_ContractTerminationIncentiveFeeCalculationMeasurementPeriodFromEntitlementAchievementDate_8B9C6A9309406061A301C50B2FA521E6" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_NumberofCommunityFacilityDistricts" xlink:label="loc_trc_NumberofCommunityFacilityDistricts_F23BB6AAD3CCE81FD7A6C50B2FA52946" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_CommitmentAndContingenciesDisclosureLineItems_358E47A4ACBEF3DCAFC1C50B2FA44542" xlink:to="loc_trc_NumberofCommunityFacilityDistricts_F23BB6AAD3CCE81FD7A6C50B2FA52946" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_AcresOfLandRelatedToLandLiens" xlink:label="loc_trc_AcresOfLandRelatedToLandLiens_F9EC04A60A7B346165DBC50B2FA5C409" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_CommitmentAndContingenciesDisclosureLineItems_358E47A4ACBEF3DCAFC1C50B2FA44542" xlink:to="loc_trc_AcresOfLandRelatedToLandLiens_F9EC04A60A7B346165DBC50B2FA5C409" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCredit" xlink:label="loc_us-gaap_LineOfCredit_98F9CA55D0A0C1007EBAC50B2FA636FC" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_CommitmentAndContingenciesDisclosureLineItems_358E47A4ACBEF3DCAFC1C50B2FA44542" xlink:to="loc_us-gaap_LineOfCredit_98F9CA55D0A0C1007EBAC50B2FA636FC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_9C56396B8311E4F5E9AFC50B2FA6FC2A" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_CommitmentAndContingenciesDisclosureLineItems_358E47A4ACBEF3DCAFC1C50B2FA44542" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_9C56396B8311E4F5E9AFC50B2FA6FC2A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LettersOfCreditOutstandingAmount" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_763035436157BB3DBF87C50B2FA67D4A" xlink:type="locator" />
    <link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_CommitmentAndContingenciesDisclosureLineItems_358E47A4ACBEF3DCAFC1C50B2FA44542" xlink:to="loc_us-gaap_LettersOfCreditOutstandingAmount_763035436157BB3DBF87C50B2FA67D4A" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LetterOfCreditPeriod" xlink:label="loc_trc_LetterOfCreditPeriod_E6F202DD7C35890CEE0AC50B2FA64886" xlink:type="locator" />
    <link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_CommitmentAndContingenciesDisclosureLineItems_358E47A4ACBEF3DCAFC1C50B2FA44542" xlink:to="loc_trc_LetterOfCreditPeriod_E6F202DD7C35890CEE0AC50B2FA64886" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LetterOfCreditRenewalPeriod" xlink:label="loc_trc_LetterOfCreditRenewalPeriod_B822E2DC7FC53449313AC50B2FA6D791" xlink:type="locator" />
    <link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_CommitmentAndContingenciesDisclosureLineItems_358E47A4ACBEF3DCAFC1C50B2FA44542" xlink:to="loc_trc_LetterOfCreditRenewalPeriod_B822E2DC7FC53449313AC50B2FA6D791" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredFinanceCostsNet" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_BE7CE1DF04890A06839CC50B2FA6832A" xlink:type="locator" />
    <link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_CommitmentAndContingenciesDisclosureLineItems_358E47A4ACBEF3DCAFC1C50B2FA44542" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_BE7CE1DF04890A06839CC50B2FA6832A" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_AdditionalReimbursementFunds" xlink:label="loc_trc_AdditionalReimbursementFunds_F03B2164B73F7D7BA214C50B2FA615F1" xlink:type="locator" />
    <link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_CommitmentAndContingenciesDisclosureLineItems_358E47A4ACBEF3DCAFC1C50B2FA44542" xlink:to="loc_trc_AdditionalReimbursementFunds_F03B2164B73F7D7BA214C50B2FA615F1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TaxesOther" xlink:label="loc_us-gaap_TaxesOther_5A762054B91F5C3C5F08C50B2FA7C95D" xlink:type="locator" />
    <link:definitionArc order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_CommitmentAndContingenciesDisclosureLineItems_358E47A4ACBEF3DCAFC1C50B2FA44542" xlink:to="loc_us-gaap_TaxesOther_5A762054B91F5C3C5F08C50B2FA7C95D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingencyNumberOfPlaintiffs" xlink:label="loc_us-gaap_LossContingencyNumberOfPlaintiffs_D2D7C4CD84EB83950A9EC50B2FA7B335" xlink:type="locator" />
    <link:definitionArc order="17" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_CommitmentAndContingenciesDisclosureLineItems_358E47A4ACBEF3DCAFC1C50B2FA44542" xlink:to="loc_us-gaap_LossContingencyNumberOfPlaintiffs_D2D7C4CD84EB83950A9EC50B2FA7B335" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LossContingencySettlementPercentofWaterUseWithintheAdjudicationBoundary" xlink:label="loc_trc_LossContingencySettlementPercentofWaterUseWithintheAdjudicationBoundary_D401CB49820A4E75BF15C50B2FA7E999" xlink:type="locator" />
    <link:definitionArc order="18" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_CommitmentAndContingenciesDisclosureLineItems_358E47A4ACBEF3DCAFC1C50B2FA44542" xlink:to="loc_trc_LossContingencySettlementPercentofWaterUseWithintheAdjudicationBoundary_D401CB49820A4E75BF15C50B2FA7E999" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_AcresofLandTransferred" xlink:label="loc_trc_AcresofLandTransferred_D8FEC50DCDB657A36B03C50B2FA71FC4" xlink:type="locator" />
    <link:definitionArc order="19" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_CommitmentAndContingenciesDisclosureLineItems_358E47A4ACBEF3DCAFC1C50B2FA44542" xlink:to="loc_trc_AcresofLandTransferred_D8FEC50DCDB657A36B03C50B2FA71FC4" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/ConsolidatedBalanceSheets" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_B3221526CCAD59091B97C50B312F7343" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_B53CF736CF02A11741B0C50B312E6F1F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_B3221526CCAD59091B97C50B312F7343" xlink:to="loc_us-gaap_StatementTable_B53CF736CF02A11741B0C50B312E6F1F" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_D9B90954FCDD6F677831C50B312ED623" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_B53CF736CF02A11741B0C50B312E6F1F" xlink:to="loc_dei_LegalEntityAxis_D9B90954FCDD6F677831C50B312ED623" xlink:type="arc" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_9E83387174809E1F331BC50B312E42FB_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_D9B90954FCDD6F677831C50B312ED623" xlink:to="loc_dei_EntityDomain_9E83387174809E1F331BC50B312E42FB_default" xlink:type="arc" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_9E83387174809E1F331BC50B312E42FB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_D9B90954FCDD6F677831C50B312ED623" xlink:to="loc_dei_EntityDomain_9E83387174809E1F331BC50B312E42FB" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_CentennialFoundersLlcMember" xlink:label="loc_trc_CentennialFoundersLlcMember_C0E52997A51FFBB8BF27C50B312FBE0E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_9E83387174809E1F331BC50B312E42FB" xlink:to="loc_trc_CentennialFoundersLlcMember_C0E52997A51FFBB8BF27C50B312FBE0E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_25C21394814EAB624FF9C50B312FF72D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_B3221526CCAD59091B97C50B312F7343" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_25C21394814EAB624FF9C50B312FF72D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_2160C97201C4EEBE584BC50B312F5B5B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_B3221526CCAD59091B97C50B312F7343" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_2160C97201C4EEBE584BC50B312F5B5B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="loc_us-gaap_CommonStockSharesIssued_7DB9DD0488F98D1063DDC50B3130D1F3" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_B3221526CCAD59091B97C50B312F7343" xlink:to="loc_us-gaap_CommonStockSharesIssued_7DB9DD0488F98D1063DDC50B3130D1F3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_F7E45FED0D896349518DC50B31304F83" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_B3221526CCAD59091B97C50B312F7343" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_F7E45FED0D896349518DC50B31304F83" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryRealEstateLandAndLandDevelopmentCosts" xlink:label="loc_us-gaap_InventoryRealEstateLandAndLandDevelopmentCosts_023DEA842BC85E70D4D9C50B31309720" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_B3221526CCAD59091B97C50B312F7343" xlink:to="loc_us-gaap_InventoryRealEstateLandAndLandDevelopmentCosts_023DEA842BC85E70D4D9C50B31309720" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/ConsolidatedStatementsOfCashFlows" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/ConsolidatedStatementsOfCashFlowsParenthetical" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_7F0F39D77C97EE17F3AEC50B30E8FF47" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_EC0F76F9454FA0B64451C50B30E8C428" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_7F0F39D77C97EE17F3AEC50B30E8FF47" xlink:to="loc_us-gaap_StatementTable_EC0F76F9454FA0B64451C50B30E8C428" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_CEFDD26A6D8403BA05BEC50B30E88849" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_EC0F76F9454FA0B64451C50B30E8C428" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_CEFDD26A6D8403BA05BEC50B30E88849" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_8F9E9DAACCECE1F44D83C50B30E8D1EA_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_CEFDD26A6D8403BA05BEC50B30E88849" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_8F9E9DAACCECE1F44D83C50B30E8D1EA_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_8F9E9DAACCECE1F44D83C50B30E8D1EA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_CEFDD26A6D8403BA05BEC50B30E88849" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_8F9E9DAACCECE1F44D83C50B30E8D1EA" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TRCMRC3LLCMember" xlink:label="loc_trc_TRCMRC3LLCMember_3E2A364FFE6AC60AAA8EC50B30E85001" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_8F9E9DAACCECE1F44D83C50B30E8D1EA" xlink:to="loc_trc_TRCMRC3LLCMember_3E2A364FFE6AC60AAA8EC50B30E85001" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TRCCEastMember" xlink:label="loc_trc_TRCCEastMember_DA04610B2A5BF81C5B62C50B30E80C9B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_8F9E9DAACCECE1F44D83C50B30E8D1EA" xlink:to="loc_trc_TRCCEastMember_DA04610B2A5BF81C5B62C50B30E80C9B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_3C8E65A5E6B81DCAA9D9C50B30E8B3E8" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_EC0F76F9454FA0B64451C50B30E8C428" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_3C8E65A5E6B81DCAA9D9C50B30E8B3E8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_181985603761E63DC052C50B30E8802E_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_3C8E65A5E6B81DCAA9D9C50B30E8B3E8" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_181985603761E63DC052C50B30E8802E_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_181985603761E63DC052C50B30E8802E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_3C8E65A5E6B81DCAA9D9C50B30E8B3E8" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_181985603761E63DC052C50B30E8802E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LandMember" xlink:label="loc_us-gaap_LandMember_3EDF5E2C8362833A1F1CC50B30E82C5C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_181985603761E63DC052C50B30E8802E" xlink:to="loc_us-gaap_LandMember_3EDF5E2C8362833A1F1CC50B30E82C5C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContributionOfProperty" xlink:label="loc_us-gaap_ContributionOfProperty_7BB6FC7EB63F7F58F8A2C50B30E8581B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7F0F39D77C97EE17F3AEC50B30E8FF47" xlink:to="loc_us-gaap_ContributionOfProperty_7BB6FC7EB63F7F58F8A2C50B30E8581B" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_DevelopmentOfBuilding" xlink:label="loc_trc_DevelopmentOfBuilding_170201594AEE1A668175C50B30E8A20E" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7F0F39D77C97EE17F3AEC50B30E8FF47" xlink:to="loc_trc_DevelopmentOfBuilding_170201594AEE1A668175C50B30E8A20E" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_ContributionofPropertyTransactionCosts" xlink:label="loc_trc_ContributionofPropertyTransactionCosts_154EC247EB4A9B1EAD59C50B30E8C798" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7F0F39D77C97EE17F3AEC50B30E8FF47" xlink:to="loc_trc_ContributionofPropertyTransactionCosts_154EC247EB4A9B1EAD59C50B30E8C798" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GrossProfit" xlink:label="loc_us-gaap_GrossProfit_15A715CF0AF3F57444D3C50B30E8449A" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7F0F39D77C97EE17F3AEC50B30E8FF47" xlink:to="loc_us-gaap_GrossProfit_15A715CF0AF3F57444D3C50B30E8449A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentDeferredGainOnSale" xlink:label="loc_us-gaap_EquityMethodInvestmentDeferredGainOnSale_9F6A4CEB9579E78F635BC50B30E8D767" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7F0F39D77C97EE17F3AEC50B30E8FF47" xlink:to="loc_us-gaap_EquityMethodInvestmentDeferredGainOnSale_9F6A4CEB9579E78F635BC50B30E8D767" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_2B6C6CCD23566A3E2226C50B30E8A237" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7F0F39D77C97EE17F3AEC50B30E8FF47" xlink:to="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_2B6C6CCD23566A3E2226C50B30E8A237" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/ConsolidatedStatementsOfComprehensiveIncomeLoss" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_9D1717B594D0BD021425C50B3118F6A1" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_8D17D4A25D94315709E2C50B311722AA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_9D1717B594D0BD021425C50B3118F6A1" xlink:to="loc_us-gaap_StatementTable_8D17D4A25D94315709E2C50B311722AA" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_44A6C24B6F1B76714034C50B3117156F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_8D17D4A25D94315709E2C50B311722AA" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_44A6C24B6F1B76714034C50B3117156F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_B038A744072FC7BCFC90C50B3117B174_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_44A6C24B6F1B76714034C50B3117156F" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_B038A744072FC7BCFC90C50B3117B174_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_B038A744072FC7BCFC90C50B3117B174" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_44A6C24B6F1B76714034C50B3117156F" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_B038A744072FC7BCFC90C50B3117B174" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember" xlink:label="loc_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_296D8296E6893E10A913C50B3117FE4F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_B038A744072FC7BCFC90C50B3117B174" xlink:to="loc_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_296D8296E6893E10A913C50B3117FE4F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxAbstract" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_80F9D1DB4A7ECC6AAF55C50B3118BF84" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_9D1717B594D0BD021425C50B3118F6A1" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_80F9D1DB4A7ECC6AAF55C50B3118BF84" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_E48E900196FCBE0F8C30C50B3118C8FF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_80F9D1DB4A7ECC6AAF55C50B3118BF84" xlink:to="loc_us-gaap_ProfitLoss_E48E900196FCBE0F8C30C50B3118C8FF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_4D22DD9CAE349BF4447FC50B3118C328" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_80F9D1DB4A7ECC6AAF55C50B3118BF84" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_4D22DD9CAE349BF4447FC50B3118C328" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax_788B2F106B81B03129EDC50B31197426" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_4D22DD9CAE349BF4447FC50B3118C328" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax_788B2F106B81B03129EDC50B31197426" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax_3F1DCFE6EC0285FB3A33C50B3119539B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_4D22DD9CAE349BF4447FC50B3118C328" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax_3F1DCFE6EC0285FB3A33C50B3119539B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax_64B483FF65FC75DDF4E4C50B3119CDD6" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_4D22DD9CAE349BF4447FC50B3118C328" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax_64B483FF65FC75DDF4E4C50B3119CDD6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax_F6B4CD95D5248DE9F58DC50B31199D27" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_4D22DD9CAE349BF4447FC50B3118C328" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax_F6B4CD95D5248DE9F58DC50B31199D27" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTax_D353EDBABCA31086BB32C50B31195192" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_4D22DD9CAE349BF4447FC50B3118C328" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTax_D353EDBABCA31086BB32C50B31195192" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossTax_9C9ABC1ECCE0A0845F4AC50B3119C40D" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_4D22DD9CAE349BF4447FC50B3118C328" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossTax_9C9ABC1ECCE0A0845F4AC50B3119C40D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_9EA027B9632070251F8DC50B311A0469" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_4D22DD9CAE349BF4447FC50B3118C328" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_9EA027B9632070251F8DC50B311A0469" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_C2DF3D33BD1E5EB39BF9C50B311A1D77" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_80F9D1DB4A7ECC6AAF55C50B3118BF84" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_C2DF3D33BD1E5EB39BF9C50B311A1D77" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_E251618CCA7E2B47AC65C50B311A230E" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_80F9D1DB4A7ECC6AAF55C50B3118BF84" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_E251618CCA7E2B47AC65C50B311A230E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_C0E0384710D3A87AA8E5C50B311AE2DF" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_80F9D1DB4A7ECC6AAF55C50B3118BF84" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_C0E0384710D3A87AA8E5C50B311AE2DF" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/ConsolidatedStatementsOfEquity" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_128BB72BF64ACDC7D050C50B310B9844" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_C2FA141B4989AA9C2A74C50B3109B178" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_128BB72BF64ACDC7D050C50B310B9844" xlink:to="loc_us-gaap_StatementTable_C2FA141B4989AA9C2A74C50B3109B178" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_299B8876B5050B1E429BC50B31099178" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_C2FA141B4989AA9C2A74C50B3109B178" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_299B8876B5050B1E429BC50B31099178" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_FA35A3BA6FB2413E2E06C50B310AFCFA_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_299B8876B5050B1E429BC50B31099178" xlink:to="loc_us-gaap_EquityComponentDomain_FA35A3BA6FB2413E2E06C50B310AFCFA_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_FA35A3BA6FB2413E2E06C50B310AFCFA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_299B8876B5050B1E429BC50B31099178" xlink:to="loc_us-gaap_EquityComponentDomain_FA35A3BA6FB2413E2E06C50B310AFCFA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ParentMember" xlink:label="loc_us-gaap_ParentMember_4E09C529C63CD14D56AFC50B310A33F2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_FA35A3BA6FB2413E2E06C50B310AFCFA" xlink:to="loc_us-gaap_ParentMember_4E09C529C63CD14D56AFC50B310A33F2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_78948C5A854D9DC221C1C50B310A201D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_4E09C529C63CD14D56AFC50B310A33F2" xlink:to="loc_us-gaap_CommonStockMember_78948C5A854D9DC221C1C50B310A201D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_E156BCED6F6FDB5B33C7C50B310B06D3" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_4E09C529C63CD14D56AFC50B310A33F2" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_E156BCED6F6FDB5B33C7C50B310B06D3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_6BEB02861C8F33236082C50B310BFCDE" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_4E09C529C63CD14D56AFC50B310A33F2" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_6BEB02861C8F33236082C50B310BFCDE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="loc_us-gaap_RetainedEarningsMember_D334B87D50978C87ED61C50B310B044E" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_4E09C529C63CD14D56AFC50B310A33F2" xlink:to="loc_us-gaap_RetainedEarningsMember_D334B87D50978C87ED61C50B310B044E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NoncontrollingInterestMember" xlink:label="loc_us-gaap_NoncontrollingInterestMember_EF11319F8CAF89E6012FC50B310B01AA" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_4E09C529C63CD14D56AFC50B310A33F2" xlink:to="loc_us-gaap_NoncontrollingInterestMember_EF11319F8CAF89E6012FC50B310B01AA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_69FD2F0F9BF1A4FD16BAC50B310B469F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_128BB72BF64ACDC7D050C50B310B9844" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_69FD2F0F9BF1A4FD16BAC50B310B469F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_18753B2F7F791022902FC50B310C8C61" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_69FD2F0F9BF1A4FD16BAC50B310B469F" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_18753B2F7F791022902FC50B310C8C61" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharesOutstanding" xlink:label="loc_us-gaap_SharesOutstanding_1C4E582CE9C6C03743B5C50B310C889C" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_69FD2F0F9BF1A4FD16BAC50B310B469F" xlink:to="loc_us-gaap_SharesOutstanding_1C4E582CE9C6C03743B5C50B310C889C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_0F5199C094CF11452050C50B310C8E0D" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_69FD2F0F9BF1A4FD16BAC50B310B469F" xlink:to="loc_us-gaap_ProfitLoss_0F5199C094CF11452050C50B310C8E0D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_7D76C9B1E6867AAE697DC50B310C0BB2" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_69FD2F0F9BF1A4FD16BAC50B310B469F" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_7D76C9B1E6867AAE697DC50B310C0BB2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross_8724583A4DB5CDF8FA7BC50B310DC9D9" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_69FD2F0F9BF1A4FD16BAC50B310B469F" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross_8724583A4DB5CDF8FA7BC50B310DC9D9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_F8CB0D32E3A42DA48500C50B310DB0F9" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_69FD2F0F9BF1A4FD16BAC50B310B469F" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_F8CB0D32E3A42DA48500C50B310DB0F9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_D5C7A01986E80C37FF28C50B310D39F4" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_69FD2F0F9BF1A4FD16BAC50B310B469F" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_D5C7A01986E80C37FF28C50B310D39F4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:label="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_DD8C7E6DF1DEA931DB9CC50B310D1E76" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_69FD2F0F9BF1A4FD16BAC50B310B469F" xlink:to="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_DD8C7E6DF1DEA931DB9CC50B310D1E76" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation" xlink:label="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_FBAC50598ADDDF3F8655C50B310D5959" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_69FD2F0F9BF1A4FD16BAC50B310B469F" xlink:to="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_FBAC50598ADDDF3F8655C50B310D5959" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_9109AA97D5BA24004031C50B310D1691" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_69FD2F0F9BF1A4FD16BAC50B310B469F" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_9109AA97D5BA24004031C50B310D1691" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_6BD501FEB5AE7E244EA0C50B310D6B7A" xlink:type="locator" />
    <link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_69FD2F0F9BF1A4FD16BAC50B310B469F" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_6BD501FEB5AE7E244EA0C50B310D6B7A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts_57A31847D0337910C1A9C50B310EED2D" xlink:type="locator" />
    <link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_69FD2F0F9BF1A4FD16BAC50B310B469F" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts_57A31847D0337910C1A9C50B310EED2D" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_AdjustmentstoAdditionalPaidinCapitalStockIssuedModifiedSharebasedAwards" xlink:label="loc_trc_AdjustmentstoAdditionalPaidinCapitalStockIssuedModifiedSharebasedAwards_0D7E502B96409481A726C50B310E621D" xlink:type="locator" />
    <link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_69FD2F0F9BF1A4FD16BAC50B310B469F" xlink:to="loc_trc_AdjustmentstoAdditionalPaidinCapitalStockIssuedModifiedSharebasedAwards_0D7E502B96409481A726C50B310E621D" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/ConsolidatedStatementsOfOperations" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_AF63BFBA77E208F67E96C50B31257612" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_59832EA08680BF55C9A1C50B31227FD5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_AF63BFBA77E208F67E96C50B31257612" xlink:to="loc_us-gaap_StatementTable_59832EA08680BF55C9A1C50B31227FD5" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_DB1745B8258711FFF251C50B31234CE0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_59832EA08680BF55C9A1C50B31227FD5" xlink:to="loc_srt_ConsolidationItemsAxis_DB1745B8258711FFF251C50B31234CE0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_EB0B16AF47B088F36FD6C50B3123B958_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_DB1745B8258711FFF251C50B31234CE0" xlink:to="loc_srt_ConsolidationItemsDomain_EB0B16AF47B088F36FD6C50B3123B958_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_EB0B16AF47B088F36FD6C50B3123B958" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_DB1745B8258711FFF251C50B31234CE0" xlink:to="loc_srt_ConsolidationItemsDomain_EB0B16AF47B088F36FD6C50B3123B958" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_1AF51D0F72E4AA26EFDDC50B312332B6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_EB0B16AF47B088F36FD6C50B3123B958" xlink:to="loc_us-gaap_OperatingSegmentsMember_1AF51D0F72E4AA26EFDDC50B312332B6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:label="loc_us-gaap_CorporateNonSegmentMember_402D361398D1F94FCD3BC50B312438D5" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_EB0B16AF47B088F36FD6C50B3123B958" xlink:to="loc_us-gaap_CorporateNonSegmentMember_402D361398D1F94FCD3BC50B312438D5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_BC518254001EF72A42FBC50B3124C922" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_59832EA08680BF55C9A1C50B31227FD5" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_BC518254001EF72A42FBC50B3124C922" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_ABD2DD6F9E69C5EF7483C50B31245611_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_BC518254001EF72A42FBC50B3124C922" xlink:to="loc_us-gaap_SegmentDomain_ABD2DD6F9E69C5EF7483C50B31245611_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_ABD2DD6F9E69C5EF7483C50B31245611" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_BC518254001EF72A42FBC50B3124C922" xlink:to="loc_us-gaap_SegmentDomain_ABD2DD6F9E69C5EF7483C50B31245611" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_CommercialAndIndustrialMember" xlink:label="loc_trc_CommercialAndIndustrialMember_B326FA188A56F562EAD8C50B312446E7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_ABD2DD6F9E69C5EF7483C50B31245611" xlink:to="loc_trc_CommercialAndIndustrialMember_B326FA188A56F562EAD8C50B312446E7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ResidentialRealEstateMember" xlink:label="loc_us-gaap_ResidentialRealEstateMember_B40AFD2B4CBD4D72783FC50B3124102B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_ABD2DD6F9E69C5EF7483C50B31245611" xlink:to="loc_us-gaap_ResidentialRealEstateMember_B40AFD2B4CBD4D72783FC50B3124102B" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_MineralResourcesMember" xlink:label="loc_trc_MineralResourcesMember_48D9F6E0653DFD396A18C50B31242A81" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_ABD2DD6F9E69C5EF7483C50B31245611" xlink:to="loc_trc_MineralResourcesMember_48D9F6E0653DFD396A18C50B31242A81" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_FarmingAndAgricultureMember" xlink:label="loc_trc_FarmingAndAgricultureMember_611752CA759DE3643AE6C50B3125975C" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_ABD2DD6F9E69C5EF7483C50B31245611" xlink:to="loc_trc_FarmingAndAgricultureMember_611752CA759DE3643AE6C50B3125975C" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_RanchOperationsMember" xlink:label="loc_trc_RanchOperationsMember_6AD2AB181259C37C7B48C50B31257CB3" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_ABD2DD6F9E69C5EF7483C50B31245611" xlink:to="loc_trc_RanchOperationsMember_6AD2AB181259C37C7B48C50B31257CB3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenuesAbstract" xlink:label="loc_us-gaap_RevenuesAbstract_F80FCFA37A750A593BD9C50B312584B4" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_AF63BFBA77E208F67E96C50B31257612" xlink:to="loc_us-gaap_RevenuesAbstract_F80FCFA37A750A593BD9C50B312584B4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_74A95F2A3E69161A3B88C50B31256734" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_F80FCFA37A750A593BD9C50B312584B4" xlink:to="loc_us-gaap_Revenues_74A95F2A3E69161A3B88C50B31256734" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostsAndExpensesAbstract" xlink:label="loc_us-gaap_CostsAndExpensesAbstract_55F303310680BE3A8560C50B3126EAC8" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_AF63BFBA77E208F67E96C50B31257612" xlink:to="loc_us-gaap_CostsAndExpensesAbstract_55F303310680BE3A8560C50B3126EAC8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostsAndExpenses" xlink:label="loc_us-gaap_CostsAndExpenses_D3F341832DCB28D25665C50B3126299F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_55F303310680BE3A8560C50B3126EAC8" xlink:to="loc_us-gaap_CostsAndExpenses_D3F341832DCB28D25665C50B3126299F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_23EFFD3FD8B09FED7997C50B312608A9" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_AF63BFBA77E208F67E96C50B31257612" xlink:to="loc_us-gaap_OperatingIncomeLoss_23EFFD3FD8B09FED7997C50B312608A9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NonoperatingIncomeExpenseAbstract" xlink:label="loc_us-gaap_NonoperatingIncomeExpenseAbstract_8D31A95CF5EF68FB36A0C50B31266A35" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_AF63BFBA77E208F67E96C50B31257612" xlink:to="loc_us-gaap_NonoperatingIncomeExpenseAbstract_8D31A95CF5EF68FB36A0C50B31266A35" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InvestmentIncomeNet" xlink:label="loc_us-gaap_InvestmentIncomeNet_6353B67BB439C989484EC50B312656BD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_8D31A95CF5EF68FB36A0C50B31266A35" xlink:to="loc_us-gaap_InvestmentIncomeNet_6353B67BB439C989484EC50B312656BD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherNonoperatingExpense" xlink:label="loc_us-gaap_OtherNonoperatingExpense_57278E5D2EC489A9BDCFC50B31271C76" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_8D31A95CF5EF68FB36A0C50B31266A35" xlink:to="loc_us-gaap_OtherNonoperatingExpense_57278E5D2EC489A9BDCFC50B31271C76" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_264AC5B2106EC5DC9899C50B31276751" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_8D31A95CF5EF68FB36A0C50B31266A35" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_264AC5B2106EC5DC9899C50B31276751" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_2A312C64673B7B246249C50B31279C67" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_AF63BFBA77E208F67E96C50B31257612" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_2A312C64673B7B246249C50B31279C67" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_1E2947BF5E062A53250FC50B3127A042" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_AF63BFBA77E208F67E96C50B31257612" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_1E2947BF5E062A53250FC50B3127A042" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_4F9B5E865ED675391977C50B3127803C" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_AF63BFBA77E208F67E96C50B31257612" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_4F9B5E865ED675391977C50B3127803C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_D0292FBAC2F9077F76D0C50B3128F9DE" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_AF63BFBA77E208F67E96C50B31257612" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_D0292FBAC2F9077F76D0C50B3128F9DE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_E6CF114D85460329E457C50B31284B03" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_AF63BFBA77E208F67E96C50B31257612" xlink:to="loc_us-gaap_ProfitLoss_E6CF114D85460329E457C50B31284B03" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_4E10F2E9C0AFC9FE580BC50B31283287" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_AF63BFBA77E208F67E96C50B31257612" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_4E10F2E9C0AFC9FE580BC50B31283287" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_5AF50EE668A4284BB55BC50B312835B6" xlink:type="locator" />
    <link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_AF63BFBA77E208F67E96C50B31257612" xlink:to="loc_us-gaap_NetIncomeLoss_5AF50EE668A4284BB55BC50B312835B6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_AED1D391CC1A94532CC1C50B3128A49B" xlink:type="locator" />
    <link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_AF63BFBA77E208F67E96C50B31257612" xlink:to="loc_us-gaap_EarningsPerShareBasic_AED1D391CC1A94532CC1C50B3128A49B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_14C7A58C2D724A20A8A0C50B3128714D" xlink:type="locator" />
    <link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_AF63BFBA77E208F67E96C50B31257612" xlink:to="loc_us-gaap_EarningsPerShareDiluted_14C7A58C2D724A20A8A0C50B3128714D" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/DocumentAndEntityInformation" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/Equity" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/EquityAdditionalInformationDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/EquityEarningsPerShareEpsDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/EquityTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/IncomeTaxes" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/IncomeTaxesAdditionalInformationDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/IncomeTaxesComponentsOfNetDeferredTaxAssetsAndLiabilitiesDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/IncomeTaxesComponentsOfProvisionBenefitForIncomeTaxesDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/IncomeTaxesReconciliationOfIncomeTaxExpenseFromStatutoryFederalIncomeTaxRateDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/IncomeTaxesTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/InterestRateSwap" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/InterestRateSwapDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativesFairValueLineItems" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_84DAA57F88BE3A04A914C50B3019D939" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_0F2E4EE5DA2D8E14A3D8C50B3019902D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_84DAA57F88BE3A04A914C50B3019D939" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_0F2E4EE5DA2D8E14A3D8C50B3019902D" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_A6D647CF4AC8FAA4B21EC50B3019112D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_0F2E4EE5DA2D8E14A3D8C50B3019902D" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_A6D647CF4AC8FAA4B21EC50B3019112D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_E5905EDF8CDAC2E1AFB2C50B30190A01_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_A6D647CF4AC8FAA4B21EC50B3019112D" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_E5905EDF8CDAC2E1AFB2C50B30190A01_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_E5905EDF8CDAC2E1AFB2C50B30190A01" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_A6D647CF4AC8FAA4B21EC50B3019112D" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_E5905EDF8CDAC2E1AFB2C50B30190A01" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestRateSwapMember" xlink:label="loc_us-gaap_InterestRateSwapMember_89441C24C268D8C77444C50B30190F99" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_E5905EDF8CDAC2E1AFB2C50B30190A01" xlink:to="loc_us-gaap_InterestRateSwapMember_89441C24C268D8C77444C50B30190F99" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_984B94F56FFAE53C247CC50B3019C0A6" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_0F2E4EE5DA2D8E14A3D8C50B3019902D" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_984B94F56FFAE53C247CC50B3019C0A6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_C8E6F6F0640AE851F646C50B30190E63_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_984B94F56FFAE53C247CC50B3019C0A6" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_C8E6F6F0640AE851F646C50B30190E63_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_C8E6F6F0640AE851F646C50B30190E63" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_984B94F56FFAE53C247CC50B3019C0A6" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_C8E6F6F0640AE851F646C50B30190E63" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_1E9E804818DFDC3C8939C50B30197CDA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_C8E6F6F0640AE851F646C50B30190E63" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_1E9E804818DFDC3C8939C50B30197CDA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_CEDDC66E82940A412202C50B3019EC36" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_0F2E4EE5DA2D8E14A3D8C50B3019902D" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_CEDDC66E82940A412202C50B3019EC36" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_4B3C434142052CAB6ADAC50B30194422_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_CEDDC66E82940A412202C50B3019EC36" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_4B3C434142052CAB6ADAC50B30194422_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_4B3C434142052CAB6ADAC50B30194422" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_CEDDC66E82940A412202C50B3019EC36" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_4B3C434142052CAB6ADAC50B30194422" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherLiabilitiesMember" xlink:label="loc_us-gaap_OtherLiabilitiesMember_412364DAC9C33C4A9D0FC50B301940BA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_4B3C434142052CAB6ADAC50B30194422" xlink:to="loc_us-gaap_OtherLiabilitiesMember_412364DAC9C33C4A9D0FC50B301940BA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsMember" xlink:label="loc_us-gaap_OtherAssetsMember_532F5375C000ABF00212C50B3019B620" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_4B3C434142052CAB6ADAC50B30194422" xlink:to="loc_us-gaap_OtherAssetsMember_532F5375C000ABF00212C50B3019B620" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeFixedInterestRate" xlink:label="loc_us-gaap_DerivativeFixedInterestRate_BC189A1E977891E84551C50B3019FF53" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_84DAA57F88BE3A04A914C50B3019D939" xlink:to="loc_us-gaap_DerivativeFixedInterestRate_BC189A1E977891E84551C50B3019FF53" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeLiabilities" xlink:label="loc_us-gaap_DerivativeLiabilities_C0D4ABC63CAD27BF30A8C50B301960EA" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_84DAA57F88BE3A04A914C50B3019D939" xlink:to="loc_us-gaap_DerivativeLiabilities_C0D4ABC63CAD27BF30A8C50B301960EA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeAssets" xlink:label="loc_us-gaap_DerivativeAssets_D7F70F5406E9AA93536EC50B301919F8" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_84DAA57F88BE3A04A914C50B3019D939" xlink:to="loc_us-gaap_DerivativeAssets_D7F70F5406E9AA93536EC50B301919F8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeNotionalAmount" xlink:label="loc_us-gaap_DerivativeNotionalAmount_67443B1D26A37535BF3FC50B3019D46C" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_84DAA57F88BE3A04A914C50B3019D939" xlink:to="loc_us-gaap_DerivativeNotionalAmount_67443B1D26A37535BF3FC50B3019D46C" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/InterestRateSwapTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/Inventories" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/InventoriesDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/InventoriesTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/InvestmentInUnconsolidatedAndConsolidatedJointVentures" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/InvestmentInUnconsolidatedAndConsolidatedJointVenturesAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_653696CBA5F2EA7714DAC50B2ED89F8C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_653696CBA5F2EA7714DAC50B2ED89F8C" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_6DD1D85EA5FA77110EAEC50B2ED8E2D2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_653696CBA5F2EA7714DAC50B2ED89F8C" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_6DD1D85EA5FA77110EAEC50B2ED8E2D2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_96A29E3A25CDF150B88BC50B2ED8E12F_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_6DD1D85EA5FA77110EAEC50B2ED8E2D2" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_96A29E3A25CDF150B88BC50B2ED8E12F_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_96A29E3A25CDF150B88BC50B2ED8E12F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_6DD1D85EA5FA77110EAEC50B2ED8E2D2" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_96A29E3A25CDF150B88BC50B2ED8E12F" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_PetroTravelHoldingsLlcPlazaMember" xlink:label="loc_trc_PetroTravelHoldingsLlcPlazaMember_DEE77A035E0677F3AADAC50B2ED96EAA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_96A29E3A25CDF150B88BC50B2ED8E12F" xlink:to="loc_trc_PetroTravelHoldingsLlcPlazaMember_DEE77A035E0677F3AADAC50B2ED96EAA" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TRCCEastMember" xlink:label="loc_trc_TRCCEastMember_4EE062F144D3D629FC37C50B2ED9B282" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_96A29E3A25CDF150B88BC50B2ED8E12F" xlink:to="loc_trc_TRCCEastMember_4EE062F144D3D629FC37C50B2ED9B282" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_MajesticRealtyCo.Member" xlink:label="loc_trc_MajesticRealtyCo.Member_6206BD5B14C97DB4B5D1C50B2ED9D480" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_96A29E3A25CDF150B88BC50B2ED8E12F" xlink:to="loc_trc_MajesticRealtyCo.Member_6206BD5B14C97DB4B5D1C50B2ED9D480" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TRCMRC3LLCMember" xlink:label="loc_trc_TRCMRC3LLCMember_ED8A961A7A0EE84AA764C50B2ED9F06D" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_96A29E3A25CDF150B88BC50B2ED8E12F" xlink:to="loc_trc_TRCMRC3LLCMember_ED8A961A7A0EE84AA764C50B2ED9F06D" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TRCMRC2LLCMember" xlink:label="loc_trc_TRCMRC2LLCMember_91C03BE78BA9A2B50CF0C50B2ED9EE57" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_96A29E3A25CDF150B88BC50B2ED8E12F" xlink:to="loc_trc_TRCMRC2LLCMember_91C03BE78BA9A2B50CF0C50B2ED9EE57" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TRCMRC1LLCMember" xlink:label="loc_trc_TRCMRC1LLCMember_DE5EC6FB75CA153D45C3C50B2EDA9FEA" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_96A29E3A25CDF150B88BC50B2ED8E12F" xlink:to="loc_trc_TRCMRC1LLCMember_DE5EC6FB75CA153D45C3C50B2EDA9FEA" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_RockefellerJointVenturesMember" xlink:label="loc_trc_RockefellerJointVenturesMember_9B0BC1AB90AB1193DA4AC50B2EDA0C8F" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_96A29E3A25CDF150B88BC50B2ED8E12F" xlink:to="loc_trc_RockefellerJointVenturesMember_9B0BC1AB90AB1193DA4AC50B2EDA0C8F" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_FiveWestParcelLlcMember" xlink:label="loc_trc_FiveWestParcelLlcMember_A740AF36D6089FC48C59C50B2EDAECC0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_RockefellerJointVenturesMember_9B0BC1AB90AB1193DA4AC50B2EDA0C8F" xlink:to="loc_trc_FiveWestParcelLlcMember_A740AF36D6089FC48C59C50B2EDAECC0" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_EighteenNineteenWestLlcMember" xlink:label="loc_trc_EighteenNineteenWestLlcMember_06EEA6D8FF7379123CA1C50B2EDA93E7" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_RockefellerJointVenturesMember_9B0BC1AB90AB1193DA4AC50B2EDA0C8F" xlink:to="loc_trc_EighteenNineteenWestLlcMember_06EEA6D8FF7379123CA1C50B2EDA93E7" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TRCCRockOutletCenterMember" xlink:label="loc_trc_TRCCRockOutletCenterMember_78057D2B1F2771AB7CE6C50B2EDA56D2" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_RockefellerJointVenturesMember_9B0BC1AB90AB1193DA4AC50B2EDA0C8F" xlink:to="loc_trc_TRCCRockOutletCenterMember_78057D2B1F2771AB7CE6C50B2EDA56D2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_BAC8FF54C480F11D5CC6C50B2EDB607C" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_653696CBA5F2EA7714DAC50B2ED89F8C" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_BAC8FF54C480F11D5CC6C50B2EDB607C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_E62BB341ED3CB70DE199C50B2EDB1617_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_BAC8FF54C480F11D5CC6C50B2EDB607C" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_E62BB341ED3CB70DE199C50B2EDB1617_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_E62BB341ED3CB70DE199C50B2EDB1617" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_BAC8FF54C480F11D5CC6C50B2EDB607C" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_E62BB341ED3CB70DE199C50B2EDB1617" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LandMember" xlink:label="loc_us-gaap_LandMember_CDDC1746DD4DF6D53889C50B2EDB68F7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_E62BB341ED3CB70DE199C50B2EDB1617" xlink:to="loc_us-gaap_LandMember_CDDC1746DD4DF6D53889C50B2EDB68F7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BuildingImprovementsMember" xlink:label="loc_us-gaap_BuildingImprovementsMember_D621ED9753B0F9463E36C50B2EDBEEB2" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_E62BB341ED3CB70DE199C50B2EDB1617" xlink:to="loc_us-gaap_BuildingImprovementsMember_D621ED9753B0F9463E36C50B2EDBEEB2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_OwnershipAxis" xlink:label="loc_srt_OwnershipAxis_E92C01F3A60D97DD1DA5C50B2EDB36D3" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_653696CBA5F2EA7714DAC50B2ED89F8C" xlink:to="loc_srt_OwnershipAxis_E92C01F3A60D97DD1DA5C50B2EDB36D3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_OwnershipDomain" xlink:label="loc_srt_OwnershipDomain_1E7CD406C9B9CE018485C50B2EDB1A83_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_E92C01F3A60D97DD1DA5C50B2EDB36D3" xlink:to="loc_srt_OwnershipDomain_1E7CD406C9B9CE018485C50B2EDB1A83_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_OwnershipDomain" xlink:label="loc_srt_OwnershipDomain_1E7CD406C9B9CE018485C50B2EDB1A83" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_E92C01F3A60D97DD1DA5C50B2EDB36D3" xlink:to="loc_srt_OwnershipDomain_1E7CD406C9B9CE018485C50B2EDB1A83" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_CentennialFoundersLlcMember" xlink:label="loc_trc_CentennialFoundersLlcMember_764E4FFB31535730DB3BC50B2EDCB48B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_1E7CD406C9B9CE018485C50B2EDB1A83" xlink:to="loc_trc_CentennialFoundersLlcMember_764E4FFB31535730DB3BC50B2EDCB48B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_5D3D001A26395A977602C50B2EDCE7EC" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_5D3D001A26395A977602C50B2EDCE7EC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_EF5103B9C44BB881FF80C50B2EDD0514" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_EF5103B9C44BB881FF80C50B2EDD0514" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableInterestEntityOwnershipPercentage" xlink:label="loc_us-gaap_VariableInterestEntityOwnershipPercentage_C0EE4D5FD002EEC83BFBC50B2EDD3F10" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_us-gaap_VariableInterestEntityOwnershipPercentage_C0EE4D5FD002EEC83BFBC50B2EDD3F10" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_8C0C16B7A9087DB1813FC50B2EDD66C4" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_8C0C16B7A9087DB1813FC50B2EDD66C4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestments" xlink:label="loc_us-gaap_EquityMethodInvestments_08F0033DB421A3DCFC06C50B2EDDF9B8" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_us-gaap_EquityMethodInvestments_08F0033DB421A3DCFC06C50B2EDDF9B8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AreaOfRealEstateProperty" xlink:label="loc_us-gaap_AreaOfRealEstateProperty_8CBC8660C8EAB91BB20DC50B2EDD642C" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_us-gaap_AreaOfRealEstateProperty_8CBC8660C8EAB91BB20DC50B2EDD642C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContributionOfProperty" xlink:label="loc_us-gaap_ContributionOfProperty_6DB52B0833E60609F2A0C50B2EDDE1EA" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_us-gaap_ContributionOfProperty_6DB52B0833E60609F2A0C50B2EDDE1EA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GrossProfit" xlink:label="loc_us-gaap_GrossProfit_4C7E5C267ED75A575865C50B2EDE19EC" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_us-gaap_GrossProfit_4C7E5C267ED75A575865C50B2EDE19EC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentDeferredGainOnSale" xlink:label="loc_us-gaap_EquityMethodInvestmentDeferredGainOnSale_CF0F90CF6D8294F60F35C50B2EDE9C4B" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_us-gaap_EquityMethodInvestmentDeferredGainOnSale_CF0F90CF6D8294F60F35C50B2EDE9C4B" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_EquityMethodInvestmentSummarizedFinancialInformationInvestment" xlink:label="loc_trc_EquityMethodInvestmentSummarizedFinancialInformationInvestment_F500DE85E6D67DA5308EC50B2EDE6233" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_trc_EquityMethodInvestmentSummarizedFinancialInformationInvestment_F500DE85E6D67DA5308EC50B2EDE6233" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_NumberOfJointVentureContracts" xlink:label="loc_trc_NumberOfJointVentureContracts_1546CDB9F6AAFC706BC5C50B2EDE236C" xlink:type="locator" />
    <link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_trc_NumberOfJointVentureContracts_1546CDB9F6AAFC706BC5C50B2EDE236C" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_DevelopmentOfBuilding" xlink:label="loc_trc_DevelopmentOfBuilding_2AFCC86A7CE0C4D72CA5C50B2EDED4E2" xlink:type="locator" />
    <link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_trc_DevelopmentOfBuilding_2AFCC86A7CE0C4D72CA5C50B2EDED4E2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AreaOfLand" xlink:label="loc_us-gaap_AreaOfLand_4E98CBEA0A5932808230C50B2EDEC7A3" xlink:type="locator" />
    <link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_us-gaap_AreaOfLand_4E98CBEA0A5932808230C50B2EDEC7A3" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_JointVenturePercentageofRentableSpaceOccupied" xlink:label="loc_trc_JointVenturePercentageofRentableSpaceOccupied_CF8250A1B38042525B85C50B2EDE4EC2" xlink:type="locator" />
    <link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_trc_JointVenturePercentageofRentableSpaceOccupied_CF8250A1B38042525B85C50B2EDE4EC2" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_EquityMethodInvestmentSummarizedFinancialInformationBorrowings" xlink:label="loc_trc_EquityMethodInvestmentSummarizedFinancialInformationBorrowings_28546B4BCCC7841B696CC50B2EDF335B" xlink:type="locator" />
    <link:definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_trc_EquityMethodInvestmentSummarizedFinancialInformationBorrowings_28546B4BCCC7841B696CC50B2EDF335B" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LeaseOfBuilding" xlink:label="loc_trc_LeaseOfBuilding_8F4C7279AB1C20B1DC2DC50B2EDF66BB" xlink:type="locator" />
    <link:definitionArc order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_trc_LeaseOfBuilding_8F4C7279AB1C20B1DC2DC50B2EDF66BB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_2C50BC89A60C244530ECC50B2EDF7BE6" xlink:type="locator" />
    <link:definitionArc order="17" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_2C50BC89A60C244530ECC50B2EDF7BE6" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_DistributionsinExcessofInvestmentinUnconsolidatedJointVenture" xlink:label="loc_trc_DistributionsinExcessofInvestmentinUnconsolidatedJointVenture_F2C631484A4B54568C7BC50B2EDF4ECB" xlink:type="locator" />
    <link:definitionArc order="18" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_trc_DistributionsinExcessofInvestmentinUnconsolidatedJointVenture_F2C631484A4B54568C7BC50B2EDF4ECB" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_EquityMethodInvestmentSummarizedFinancialInformationLineofCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_trc_EquityMethodInvestmentSummarizedFinancialInformationLineofCreditFacilityMaximumBorrowingCapacity_57D1A527F7667741D974C50B2EDFFDE9" xlink:type="locator" />
    <link:definitionArc order="19" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_trc_EquityMethodInvestmentSummarizedFinancialInformationLineofCreditFacilityMaximumBorrowingCapacity_57D1A527F7667741D974C50B2EDFFDE9" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_ProceedsfromSaleofBuildingtoThirdParty" xlink:label="loc_trc_ProceedsfromSaleofBuildingtoThirdParty_D0CA737A23AC7BFF6CCAC50B2EDFD949" xlink:type="locator" />
    <link:definitionArc order="20" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_trc_ProceedsfromSaleofBuildingtoThirdParty_D0CA737A23AC7BFF6CCAC50B2EDFD949" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainLossOnDispositionOfAssets1" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets1_570F55CDBA69EFAD2586C50B2EE02A93" xlink:type="locator" />
    <link:definitionArc order="21" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets1_570F55CDBA69EFAD2586C50B2EE02A93" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_ContributionForJointVentureForFutureDevelopment" xlink:label="loc_trc_ContributionForJointVentureForFutureDevelopment_A46292D00118117F0670C50B2EE0BE7E" xlink:type="locator" />
    <link:definitionArc order="22" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_trc_ContributionForJointVentureForFutureDevelopment_A46292D00118117F0670C50B2EE0BE7E" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_InvestmentsinandAdvancetoAffiliatesSubsidiariesAssociatesandJointVenturesConstructionLoanCostsPercent" xlink:label="loc_trc_InvestmentsinandAdvancetoAffiliatesSubsidiariesAssociatesandJointVenturesConstructionLoanCostsPercent_494B562845B149AE699CC50B2EE0C96D" xlink:type="locator" />
    <link:definitionArc order="23" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_trc_InvestmentsinandAdvancetoAffiliatesSubsidiariesAssociatesandJointVenturesConstructionLoanCostsPercent_494B562845B149AE699CC50B2EE0C96D" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_InvestmentsinandAdvancetoAffiliatesSubsidiariesAssociatesandJointVenturesEquityContributionsPercent" xlink:label="loc_trc_InvestmentsinandAdvancetoAffiliatesSubsidiariesAssociatesandJointVenturesEquityContributionsPercent_FE5E43842D4E437D3A60C50B2EE0E575" xlink:type="locator" />
    <link:definitionArc order="24" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_trc_InvestmentsinandAdvancetoAffiliatesSubsidiariesAssociatesandJointVenturesEquityContributionsPercent_FE5E43842D4E437D3A60C50B2EE0E575" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_InvestmentsinandAdvancetoAffiliatesSubsidiariesAssociatesandJointVenturesNumberofMembers" xlink:label="loc_trc_InvestmentsinandAdvancetoAffiliatesSubsidiariesAssociatesandJointVenturesNumberofMembers_BD014D98BED0BD0B5536C50B2EE05531" xlink:type="locator" />
    <link:definitionArc order="25" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_trc_InvestmentsinandAdvancetoAffiliatesSubsidiariesAssociatesandJointVenturesNumberofMembers_BD014D98BED0BD0B5536C50B2EE05531" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MinorityInterestInJointVentures" xlink:label="loc_us-gaap_MinorityInterestInJointVentures_AE099A519F0EBB9518CCC50B2EE02A5A" xlink:type="locator" />
    <link:definitionArc order="26" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_us-gaap_MinorityInterestInJointVentures_AE099A519F0EBB9518CCC50B2EE02A5A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MinorityInterestOwnershipPercentageByParent" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_164832FB7C820A143320C50B2EE1C59E" xlink:type="locator" />
    <link:definitionArc order="27" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_6190316BD2BEBE95DC85C50B2EDC533E" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_164832FB7C820A143320C50B2EE1C59E" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/InvestmentInUnconsolidatedAndConsolidatedJointVenturesCondensedStatementsOfOperationsAndBalanceSheetInformationDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_67C38C2C2C1AB55E41B1C50B2ECD050E" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_F75CA17A8BE8C647B786C50B2ECA3EF2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_67C38C2C2C1AB55E41B1C50B2ECD050E" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_F75CA17A8BE8C647B786C50B2ECA3EF2" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_D513CD0DED3BD5D37170C50B2ECA729B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_F75CA17A8BE8C647B786C50B2ECA3EF2" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_D513CD0DED3BD5D37170C50B2ECA729B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_EE0CE845626A050B7604C50B2ECBF656_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_D513CD0DED3BD5D37170C50B2ECA729B" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_EE0CE845626A050B7604C50B2ECBF656_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_EE0CE845626A050B7604C50B2ECBF656" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_D513CD0DED3BD5D37170C50B2ECA729B" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_EE0CE845626A050B7604C50B2ECBF656" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_PetroTravelHoldingsLlcPlazaMember" xlink:label="loc_trc_PetroTravelHoldingsLlcPlazaMember_F3409B981772AC68B1AEC50B2ECB459D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_EE0CE845626A050B7604C50B2ECBF656" xlink:to="loc_trc_PetroTravelHoldingsLlcPlazaMember_F3409B981772AC68B1AEC50B2ECB459D" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_FiveWestParcelLlcMember" xlink:label="loc_trc_FiveWestParcelLlcMember_567946EF34C6EA7A907EC50B2ECBC4A4" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_EE0CE845626A050B7604C50B2ECBF656" xlink:to="loc_trc_FiveWestParcelLlcMember_567946EF34C6EA7A907EC50B2ECBC4A4" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_EighteenNineteenWestLlcMember" xlink:label="loc_trc_EighteenNineteenWestLlcMember_306279C8A764514F1796C50B2ECB3476" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_EE0CE845626A050B7604C50B2ECBF656" xlink:to="loc_trc_EighteenNineteenWestLlcMember_306279C8A764514F1796C50B2ECB3476" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TRCCRockOutletCenterMember" xlink:label="loc_trc_TRCCRockOutletCenterMember_56266CB7D9DFBB2D9648C50B2ECC9A39" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_EE0CE845626A050B7604C50B2ECBF656" xlink:to="loc_trc_TRCCRockOutletCenterMember_56266CB7D9DFBB2D9648C50B2ECC9A39" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TRCMRC1LLCMember" xlink:label="loc_trc_TRCMRC1LLCMember_64E92C57E4EEBCA666FAC50B2ECC4F39" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_EE0CE845626A050B7604C50B2ECBF656" xlink:to="loc_trc_TRCMRC1LLCMember_64E92C57E4EEBCA666FAC50B2ECC4F39" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TRCMRC2LLCMember" xlink:label="loc_trc_TRCMRC2LLCMember_589D6D985F3E98AB749FC50B2ECC1413" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_EE0CE845626A050B7604C50B2ECBF656" xlink:to="loc_trc_TRCMRC2LLCMember_589D6D985F3E98AB749FC50B2ECC1413" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TRCMRC3LLCMember" xlink:label="loc_trc_TRCMRC3LLCMember_3C84D972161434F2DF4CC50B2ECCA0CA" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_EE0CE845626A050B7604C50B2ECBF656" xlink:to="loc_trc_TRCMRC3LLCMember_3C84D972161434F2DF4CC50B2ECCA0CA" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_CentennialFoundersLlcMember" xlink:label="loc_trc_CentennialFoundersLlcMember_A519225155B2786E975FC50B2ECC4857" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_EE0CE845626A050B7604C50B2ECBF656" xlink:to="loc_trc_CentennialFoundersLlcMember_A519225155B2786E975FC50B2ECC4857" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAbstract" xlink:label="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAbstract_087AA65C1F8A2223601BC50B2ECDFFFA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_67C38C2C2C1AB55E41B1C50B2ECD050E" xlink:to="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAbstract_087AA65C1F8A2223601BC50B2ECDFFFA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets" xlink:label="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets_285A088C5034C63934D6C50B2ECD09CE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAbstract_087AA65C1F8A2223601BC50B2ECDFFFA" xlink:to="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets_285A088C5034C63934D6C50B2ECD09CE" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_EquityMethodInvestmentSummarizedFinancialInformationBorrowings" xlink:label="loc_trc_EquityMethodInvestmentSummarizedFinancialInformationBorrowings_A48779D9788426D230E5C50B2ECE8EE9" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAbstract_087AA65C1F8A2223601BC50B2ECDFFFA" xlink:to="loc_trc_EquityMethodInvestmentSummarizedFinancialInformationBorrowings_A48779D9788426D230E5C50B2ECE8EE9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity" xlink:label="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity_D242B7A1BB43CCD92E3AC50B2ECED19C" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAbstract_087AA65C1F8A2223601BC50B2ECDFFFA" xlink:to="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity_D242B7A1BB43CCD92E3AC50B2ECED19C" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_EquityMethodInvestmentSummarizedFinancialInformationInvestment" xlink:label="loc_trc_EquityMethodInvestmentSummarizedFinancialInformationInvestment_7FA67D09B17C397CD9EEC50B2ECE2DDA" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAbstract_087AA65C1F8A2223601BC50B2ECDFFFA" xlink:to="loc_trc_EquityMethodInvestmentSummarizedFinancialInformationInvestment_7FA67D09B17C397CD9EEC50B2ECE2DDA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationIncomeStatementAbstract" xlink:label="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationIncomeStatementAbstract_336D1218B975186954C9C50B2ECEFA8D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_67C38C2C2C1AB55E41B1C50B2ECD050E" xlink:to="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationIncomeStatementAbstract_336D1218B975186954C9C50B2ECEFA8D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue" xlink:label="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue_D0900E1BF12732EE4B92C50B2ECE65D6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationIncomeStatementAbstract_336D1218B975186954C9C50B2ECEFA8D" xlink:to="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue_D0900E1BF12732EE4B92C50B2ECE65D6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationGrossProfitLoss" xlink:label="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationGrossProfitLoss_121B1630B9FAD7EC96E1C50B2ECFED07" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationIncomeStatementAbstract_336D1218B975186954C9C50B2ECEFA8D" xlink:to="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationGrossProfitLoss_121B1630B9FAD7EC96E1C50B2ECFED07" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_EquityMethodInvestmentSummarizedFinancialInformationEquityInEarningsLoss" xlink:label="loc_trc_EquityMethodInvestmentSummarizedFinancialInformationEquityInEarningsLoss_3C63DF4AECA50C5F1523C50B2ECFC01D" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvestmentSummarizedFinancialInformationIncomeStatementAbstract_336D1218B975186954C9C50B2ECEFA8D" xlink:to="loc_trc_EquityMethodInvestmentSummarizedFinancialInformationEquityInEarningsLoss_3C63DF4AECA50C5F1523C50B2ECFC01D" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_EquityMethodInvestmentSummarizedFinancialInformationTenantAllowanceAmortization" xlink:label="loc_trc_EquityMethodInvestmentSummarizedFinancialInformationTenantAllowanceAmortization_CDE51D723132A20810E7C50B2ECF50B0" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_67C38C2C2C1AB55E41B1C50B2ECD050E" xlink:to="loc_trc_EquityMethodInvestmentSummarizedFinancialInformationTenantAllowanceAmortization_CDE51D723132A20810E7C50B2ECF50B0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetAcquiredInPlaceLeases" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetAcquiredInPlaceLeases_4E24A9B5D9BB22B52705C50B2ECF2B78" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_67C38C2C2C1AB55E41B1C50B2ECD050E" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetAcquiredInPlaceLeases_4E24A9B5D9BB22B52705C50B2ECF2B78" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/InvestmentInUnconsolidatedAndConsolidatedJointVenturesTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/Leases" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/LeasesDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems" xlink:label="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_D409EC2FDCBE628B3EBDC50B2FBAE542" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable" xlink:label="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable_148061E1D8FDB4965706C50B2FB95730" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_D409EC2FDCBE628B3EBDC50B2FBAE542" xlink:to="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable_148061E1D8FDB4965706C50B2FB95730" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_CB01D6C309232B3FAA3BC50B2FB95EBD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable_148061E1D8FDB4965706C50B2FB95730" xlink:to="loc_srt_RangeAxis_CB01D6C309232B3FAA3BC50B2FB95EBD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_C4F4B2F051FC912493DBC50B2FB9AD7E_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_CB01D6C309232B3FAA3BC50B2FB95EBD" xlink:to="loc_srt_RangeMember_C4F4B2F051FC912493DBC50B2FB9AD7E_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_C4F4B2F051FC912493DBC50B2FB9AD7E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_CB01D6C309232B3FAA3BC50B2FB95EBD" xlink:to="loc_srt_RangeMember_C4F4B2F051FC912493DBC50B2FB9AD7E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_F3CF682A163D8A8DC86BC50B2FBA7CFF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_C4F4B2F051FC912493DBC50B2FB9AD7E" xlink:to="loc_srt_MaximumMember_F3CF682A163D8A8DC86BC50B2FBA7CFF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LessorOperatingLeaseTermOfContract" xlink:label="loc_us-gaap_LessorOperatingLeaseTermOfContract_BBAD8D6FD2256B02DF70C50B2FBA9CFF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_D409EC2FDCBE628B3EBDC50B2FBAE542" xlink:to="loc_us-gaap_LessorOperatingLeaseTermOfContract_BBAD8D6FD2256B02DF70C50B2FBA9CFF" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/LeasesTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/LineOfCreditAndLongTermDebt" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/LineOfCreditAndLongTermDebtAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityLineItems" xlink:label="loc_us-gaap_LineOfCreditFacilityLineItems_42058F7F8143B37AB7D9C50B303F6927" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityTable" xlink:label="loc_us-gaap_LineOfCreditFacilityTable_59ADCB1FD739C318C2CAC50B303CA264" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_42058F7F8143B37AB7D9C50B303F6927" xlink:to="loc_us-gaap_LineOfCreditFacilityTable_59ADCB1FD739C318C2CAC50B303CA264" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_80FA7810A96E9EEEA81CC50B303C5D8A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_59ADCB1FD739C318C2CAC50B303CA264" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_80FA7810A96E9EEEA81CC50B303C5D8A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_75AFB006E66B34EABBA9C50B303CEB29_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_80FA7810A96E9EEEA81CC50B303C5D8A" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_75AFB006E66B34EABBA9C50B303CEB29_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_75AFB006E66B34EABBA9C50B303CEB29" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_80FA7810A96E9EEEA81CC50B303C5D8A" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_75AFB006E66B34EABBA9C50B303CEB29" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_C31C47B852E251850440C50B303CCBA1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_75AFB006E66B34EABBA9C50B303CEB29" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_C31C47B852E251850440C50B303CCBA1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NotesPayableOtherPayablesMember" xlink:label="loc_us-gaap_NotesPayableOtherPayablesMember_08EDC259D77BCFAC2CC1C50B303D0710" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_75AFB006E66B34EABBA9C50B303CEB29" xlink:to="loc_us-gaap_NotesPayableOtherPayablesMember_08EDC259D77BCFAC2CC1C50B303D0710" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:label="loc_us-gaap_CreditFacilityAxis_3FE5C2A9CD9527B3152EC50B303D8838" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_59ADCB1FD739C318C2CAC50B303CA264" xlink:to="loc_us-gaap_CreditFacilityAxis_3FE5C2A9CD9527B3152EC50B303D8838" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="loc_us-gaap_CreditFacilityDomain_5C781E754D9BA5E8852BC50B303DE8AD_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_3FE5C2A9CD9527B3152EC50B303D8838" xlink:to="loc_us-gaap_CreditFacilityDomain_5C781E754D9BA5E8852BC50B303DE8AD_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="loc_us-gaap_CreditFacilityDomain_5C781E754D9BA5E8852BC50B303DE8AD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_3FE5C2A9CD9527B3152EC50B303D8838" xlink:to="loc_us-gaap_CreditFacilityDomain_5C781E754D9BA5E8852BC50B303DE8AD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_6E3874298D0E30914524C50B303D89D1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_5C781E754D9BA5E8852BC50B303DE8AD" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_6E3874298D0E30914524C50B303D89D1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MediumTermNotesMember" xlink:label="loc_us-gaap_MediumTermNotesMember_B5CA6812AA23F8254057C50B303E9051" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_5C781E754D9BA5E8852BC50B303DE8AD" xlink:to="loc_us-gaap_MediumTermNotesMember_B5CA6812AA23F8254057C50B303E9051" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableRateAxis" xlink:label="loc_us-gaap_VariableRateAxis_019689FF1BF0124AC787C50B303E75F6" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_59ADCB1FD739C318C2CAC50B303CA264" xlink:to="loc_us-gaap_VariableRateAxis_019689FF1BF0124AC787C50B303E75F6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableRateDomain" xlink:label="loc_us-gaap_VariableRateDomain_D33E79C0A2789746B425C50B303E1D54_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_019689FF1BF0124AC787C50B303E75F6" xlink:to="loc_us-gaap_VariableRateDomain_D33E79C0A2789746B425C50B303E1D54_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableRateDomain" xlink:label="loc_us-gaap_VariableRateDomain_D33E79C0A2789746B425C50B303E1D54" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_019689FF1BF0124AC787C50B303E75F6" xlink:to="loc_us-gaap_VariableRateDomain_D33E79C0A2789746B425C50B303E1D54" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_SelectedLiborRateMember" xlink:label="loc_trc_SelectedLiborRateMember_E4512AAB703FCAC3B3BEC50B303E67C1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_D33E79C0A2789746B425C50B303E1D54" xlink:to="loc_trc_SelectedLiborRateMember_E4512AAB703FCAC3B3BEC50B303E67C1" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_FixedTermLiborMember" xlink:label="loc_trc_FixedTermLiborMember_DA7EE7F314683A1924E7C50B303FE74B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_D33E79C0A2789746B425C50B303E1D54" xlink:to="loc_trc_FixedTermLiborMember_DA7EE7F314683A1924E7C50B303FE74B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebt" xlink:label="loc_us-gaap_LongTermDebt_A8D2A23B0ABDB0DBD607C50B303F84C6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_42058F7F8143B37AB7D9C50B303F6927" xlink:to="loc_us-gaap_LongTermDebt_A8D2A23B0ABDB0DBD607C50B303F84C6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_CBC3580035CF5E4059CBC50B303F74FB" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_42058F7F8143B37AB7D9C50B303F6927" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_CBC3580035CF5E4059CBC50B303F74FB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeFixedInterestRate" xlink:label="loc_us-gaap_DerivativeFixedInterestRate_D37F661B3C34127F6AD2C50B303F789B" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_42058F7F8143B37AB7D9C50B303F6927" xlink:to="loc_us-gaap_DerivativeFixedInterestRate_D37F661B3C34127F6AD2C50B303F789B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_5FA8BFEB484D506D24D5C50B303F3E9C" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_42058F7F8143B37AB7D9C50B303F6927" xlink:to="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_5FA8BFEB484D506D24D5C50B303F3E9C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_10C5B23B88501E0B06A3C50B3040F0F9" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_42058F7F8143B37AB7D9C50B303F6927" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_10C5B23B88501E0B06A3C50B3040F0F9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityCommitmentFeePercentage" xlink:label="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_80B854A23AC454F67F1AC50B30405952" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_42058F7F8143B37AB7D9C50B303F6927" xlink:to="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_80B854A23AC454F67F1AC50B30405952" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_DebtInstrumentCovenantComplianceNumberofCovenants" xlink:label="loc_trc_DebtInstrumentCovenantComplianceNumberofCovenants_44F1B66B169BB3636BE3C50B3040D15F" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_42058F7F8143B37AB7D9C50B303F6927" xlink:to="loc_trc_DebtInstrumentCovenantComplianceNumberofCovenants_44F1B66B169BB3636BE3C50B3040D15F" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_DebtCovenantComplianceDebtEquityRatio" xlink:label="loc_trc_DebtCovenantComplianceDebtEquityRatio_3BC278319778EF38C4A5C50B304084FC" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_42058F7F8143B37AB7D9C50B303F6927" xlink:to="loc_trc_DebtCovenantComplianceDebtEquityRatio_3BC278319778EF38C4A5C50B304084FC" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_DebtCovenantComplianceDebtServiceCoverageRatio" xlink:label="loc_trc_DebtCovenantComplianceDebtServiceCoverageRatio_DD8916471C23503A8CF3C50B30402267" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_42058F7F8143B37AB7D9C50B303F6927" xlink:to="loc_trc_DebtCovenantComplianceDebtServiceCoverageRatio_DD8916471C23503A8CF3C50B30402267" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_DebtCovenantComplianceLiquidAssetsMinimum" xlink:label="loc_trc_DebtCovenantComplianceLiquidAssetsMinimum_E4152BB5E616FB6F438AC50B304024CC" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_42058F7F8143B37AB7D9C50B303F6927" xlink:to="loc_trc_DebtCovenantComplianceLiquidAssetsMinimum_E4152BB5E616FB6F438AC50B304024CC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_0EED0642D7CCD941FD5DC50B30410B75" xlink:type="locator" />
    <link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_42058F7F8143B37AB7D9C50B303F6927" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_0EED0642D7CCD941FD5DC50B30410B75" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_6015931FEA8615D16B84C50B30418554" xlink:type="locator" />
    <link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_42058F7F8143B37AB7D9C50B303F6927" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_6015931FEA8615D16B84C50B30418554" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentPeriodicPayment" xlink:label="loc_us-gaap_DebtInstrumentPeriodicPayment_BD6EE247019AB74EB604C50B304127D0" xlink:type="locator" />
    <link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_42058F7F8143B37AB7D9C50B303F6927" xlink:to="loc_us-gaap_DebtInstrumentPeriodicPayment_BD6EE247019AB74EB604C50B304127D0" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/LineOfCreditAndLongTermDebtComponentsOfDebtDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/LineOfCreditAndLongTermDebtOutstandingIndebtednessAndRespectivePrincipalMaturitiesDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_149FCF6BB97DE342CEEAC50B30343716" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_498889189EC3174CE4CFC50B30333F3E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_149FCF6BB97DE342CEEAC50B30343716" xlink:to="loc_us-gaap_DebtInstrumentTable_498889189EC3174CE4CFC50B30333F3E" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_00213FA562BB891C47D0C50B30330E3B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_498889189EC3174CE4CFC50B30333F3E" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_00213FA562BB891C47D0C50B30330E3B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_70D7DF34B8C3FEE728F3C50B3033FDCF_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_00213FA562BB891C47D0C50B30330E3B" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_70D7DF34B8C3FEE728F3C50B3033FDCF_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_70D7DF34B8C3FEE728F3C50B3033FDCF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_00213FA562BB891C47D0C50B30330E3B" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_70D7DF34B8C3FEE728F3C50B3033FDCF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MediumTermNotesMember" xlink:label="loc_us-gaap_MediumTermNotesMember_FB14526A9984EDABA28EC50B3034B7B3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_70D7DF34B8C3FEE728F3C50B3033FDCF" xlink:to="loc_us-gaap_MediumTermNotesMember_FB14526A9984EDABA28EC50B3034B7B3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NotesPayableOtherPayablesMember" xlink:label="loc_us-gaap_NotesPayableOtherPayablesMember_D9A28C18DFC8E42F8010C50B30347C62" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_70D7DF34B8C3FEE728F3C50B3033FDCF" xlink:to="loc_us-gaap_NotesPayableOtherPayablesMember_D9A28C18DFC8E42F8010C50B30347C62" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MaturitiesOfLongTermDebtAbstract" xlink:label="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_2B3BC5BCB854CF348EE3C50B3034A798" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_149FCF6BB97DE342CEEAC50B30343716" xlink:to="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_2B3BC5BCB854CF348EE3C50B3034A798" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_30EBDC8C87E996124402C50B30354E4E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_2B3BC5BCB854CF348EE3C50B3034A798" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_30EBDC8C87E996124402C50B30354E4E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_6DC23F8C524F38618F76C50B30357143" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_2B3BC5BCB854CF348EE3C50B3034A798" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_6DC23F8C524F38618F76C50B30357143" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_62534C0210B3BA257EE5C50B3035278F" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_2B3BC5BCB854CF348EE3C50B3034A798" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_62534C0210B3BA257EE5C50B3035278F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_80A9BAFBAF40B913302DC50B3035B54C" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_2B3BC5BCB854CF348EE3C50B3034A798" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_80A9BAFBAF40B913302DC50B3035B54C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_3F97270FEE4A4E60EAB1C50B30351B9C" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_2B3BC5BCB854CF348EE3C50B3034A798" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_3F97270FEE4A4E60EAB1C50B30351B9C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_522735FBC01D904C55DFC50B30363B76" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_2B3BC5BCB854CF348EE3C50B3034A798" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_522735FBC01D904C55DFC50B30363B76" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebt" xlink:label="loc_us-gaap_LongTermDebt_10529B821E5FCB2BAAFEC50B3036DF27" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_2B3BC5BCB854CF348EE3C50B3034A798" xlink:to="loc_us-gaap_LongTermDebt_10529B821E5FCB2BAAFEC50B3036DF27" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/LineOfCreditAndLongTermDebtTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/LongTermWaterAssets" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/LongTermWaterAssetsAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleLineItems" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_62AAB99FB58FA4632D00C50B306B618D" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable" xlink:label="loc_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_BC7174C4591EE14789E2C50B306B0609" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_62AAB99FB58FA4632D00C50B306B618D" xlink:to="loc_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_BC7174C4591EE14789E2C50B306B0609" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_CounterpartyNameAxis" xlink:label="loc_srt_CounterpartyNameAxis_F4DC7EB0BA423A01D0D6C50B306B0449" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_BC7174C4591EE14789E2C50B306B0609" xlink:to="loc_srt_CounterpartyNameAxis_F4DC7EB0BA423A01D0D6C50B306B0449" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_AE598CEED5EC2A713DE5C50B306B9737_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_F4DC7EB0BA423A01D0D6C50B306B0449" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_AE598CEED5EC2A713DE5C50B306B9737_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_AE598CEED5EC2A713DE5C50B306B9737" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_F4DC7EB0BA423A01D0D6C50B306B0449" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_AE598CEED5EC2A713DE5C50B306B9737" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_AntelopeValleyEastKernWaterAgencyMember" xlink:label="loc_trc_AntelopeValleyEastKernWaterAgencyMember_78D14AB6EC7468714C7EC50B306BD096" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_AE598CEED5EC2A713DE5C50B306B9737" xlink:to="loc_trc_AntelopeValleyEastKernWaterAgencyMember_78D14AB6EC7468714C7EC50B306BD096" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_StateWaterProjectContractsMember" xlink:label="loc_trc_StateWaterProjectContractsMember_231256357DC03CED30FBC50B306B53CA" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_AE598CEED5EC2A713DE5C50B306B9737" xlink:to="loc_trc_StateWaterProjectContractsMember_231256357DC03CED30FBC50B306B53CA" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_DMBPacificLLCMember" xlink:label="loc_trc_DMBPacificLLCMember_AE0E9481FB2C607F8A16C50B306B17F1" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_AE598CEED5EC2A713DE5C50B306B9737" xlink:to="loc_trc_DMBPacificLLCMember_AE0E9481FB2C607F8A16C50B306B17F1" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_PastoriaEnergyFacilityLLCMember" xlink:label="loc_trc_PastoriaEnergyFacilityLLCMember_C1898D2FAE7885AECE4CC50B306B8E8D" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_AE598CEED5EC2A713DE5C50B306B9737" xlink:to="loc_trc_PastoriaEnergyFacilityLLCMember_C1898D2FAE7885AECE4CC50B306B8E8D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_C457FF9FC19B48885B55C50B306B631C" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_BC7174C4591EE14789E2C50B306B0609" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_C457FF9FC19B48885B55C50B306B631C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleNameDomain" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_04C0EEBC224E8F4FC29AC50B306BCD3D_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_C457FF9FC19B48885B55C50B306B631C" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_04C0EEBC224E8F4FC29AC50B306BCD3D_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleNameDomain" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_04C0EEBC224E8F4FC29AC50B306BCD3D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_C457FF9FC19B48885B55C50B306B631C" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_04C0EEBC224E8F4FC29AC50B306BCD3D" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_StateWaterProjectContractsMember" xlink:label="loc_trc_StateWaterProjectContractsMember_9EB8E033EAD90218139EC50B306B839E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_04C0EEBC224E8F4FC29AC50B306BCD3D" xlink:to="loc_trc_StateWaterProjectContractsMember_9EB8E033EAD90218139EC50B306B839E" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TransferableWaterMember" xlink:label="loc_trc_TransferableWaterMember_2B347511DA276D0B5A83C50B306BE186" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_04C0EEBC224E8F4FC29AC50B306BCD3D" xlink:to="loc_trc_TransferableWaterMember_2B347511DA276D0B5A83C50B306BE186" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_F0B55A847923F00774C9C50B306B46B4" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_BC7174C4591EE14789E2C50B306B0609" xlink:to="loc_srt_RangeAxis_F0B55A847923F00774C9C50B306B46B4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_E5D37864E62666766D40C50B306BDC3B_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_F0B55A847923F00774C9C50B306B46B4" xlink:to="loc_srt_RangeMember_E5D37864E62666766D40C50B306BDC3B_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_E5D37864E62666766D40C50B306BDC3B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_F0B55A847923F00774C9C50B306B46B4" xlink:to="loc_srt_RangeMember_E5D37864E62666766D40C50B306BDC3B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_3AD6D7C87F0A59867BE7C50B306B5B2B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_E5D37864E62666766D40C50B306BDC3B" xlink:to="loc_srt_MaximumMember_3AD6D7C87F0A59867BE7C50B306B5B2B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidatedEntitiesAxis" xlink:label="loc_srt_ConsolidatedEntitiesAxis_1D0F29652579DFDA1E7FC50B306B4073" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_BC7174C4591EE14789E2C50B306B0609" xlink:to="loc_srt_ConsolidatedEntitiesAxis_1D0F29652579DFDA1E7FC50B306B4073" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidatedEntitiesDomain" xlink:label="loc_srt_ConsolidatedEntitiesDomain_353F6B74E2792BA541C1C50B306BE1E4_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_1D0F29652579DFDA1E7FC50B306B4073" xlink:to="loc_srt_ConsolidatedEntitiesDomain_353F6B74E2792BA541C1C50B306BE1E4_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidatedEntitiesDomain" xlink:label="loc_srt_ConsolidatedEntitiesDomain_353F6B74E2792BA541C1C50B306BE1E4" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_1D0F29652579DFDA1E7FC50B306B4073" xlink:to="loc_srt_ConsolidatedEntitiesDomain_353F6B74E2792BA541C1C50B306BE1E4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_SubsidiariesMember" xlink:label="loc_srt_SubsidiariesMember_85637B502AD180CB8241C50B306B3FF6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_353F6B74E2792BA541C1C50B306BE1E4" xlink:to="loc_srt_SubsidiariesMember_85637B502AD180CB8241C50B306B3FF6" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LongtermWaterAssetsBankedWaterHeldatAgencyOwnedWaterBankVolume" xlink:label="loc_trc_LongtermWaterAssetsBankedWaterHeldatAgencyOwnedWaterBankVolume_C69E3493FC5CBCDE80DEC50B306BB14C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_62AAB99FB58FA4632D00C50B306B618D" xlink:to="loc_trc_LongtermWaterAssetsBankedWaterHeldatAgencyOwnedWaterBankVolume_C69E3493FC5CBCDE80DEC50B306BB14C" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LongtermWaterAssetsWaterContractRightsforFutureDeliveryVolume" xlink:label="loc_trc_LongtermWaterAssetsWaterContractRightsforFutureDeliveryVolume_329525F65F2CB617086AC50B306B79B6" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_62AAB99FB58FA4632D00C50B306B618D" xlink:to="loc_trc_LongtermWaterAssetsWaterContractRightsforFutureDeliveryVolume_329525F65F2CB617086AC50B306B79B6" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LongtermWaterAssetsVolume" xlink:label="loc_trc_LongtermWaterAssetsVolume_2E92A86DD645245AFB17C50B306BA2D0" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_62AAB99FB58FA4632D00C50B306B618D" xlink:to="loc_trc_LongtermWaterAssetsVolume_2E92A86DD645245AFB17C50B306BA2D0" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LongTermWaterAssetsContractRenewalOptionalTerm" xlink:label="loc_trc_LongTermWaterAssetsContractRenewalOptionalTerm_02E6904ECEAB81DD932AC50B306BBA2D" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_62AAB99FB58FA4632D00C50B306B618D" xlink:to="loc_trc_LongTermWaterAssetsContractRenewalOptionalTerm_02E6904ECEAB81DD932AC50B306BBA2D" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_CostofPurchasedWaterArea" xlink:label="loc_trc_CostofPurchasedWaterArea_937107B48F7CDB7F4FE8C50B306BDE1E" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_62AAB99FB58FA4632D00C50B306B618D" xlink:to="loc_trc_CostofPurchasedWaterArea_937107B48F7CDB7F4FE8C50B306BDE1E" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LongTermWaterAssetsPurchasedAnnualFeeIncreasePercent" xlink:label="loc_trc_LongTermWaterAssetsPurchasedAnnualFeeIncreasePercent_FF6B8425A4A7C382A475C50B306B8D9D" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_62AAB99FB58FA4632D00C50B306B618D" xlink:to="loc_trc_LongTermWaterAssetsPurchasedAnnualFeeIncreasePercent_FF6B8425A4A7C382A475C50B306B8D9D" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LongtermWaterAssetsVolumeAmountAfterYearOne" xlink:label="loc_trc_LongtermWaterAssetsVolumeAmountAfterYearOne_075381629711360A5B14C50B306B6C1A" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_62AAB99FB58FA4632D00C50B306B618D" xlink:to="loc_trc_LongtermWaterAssetsVolumeAmountAfterYearOne_075381629711360A5B14C50B306B6C1A" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LongTermWaterAssetsPurchasedAnnualOptionPaymentPercent" xlink:label="loc_trc_LongTermWaterAssetsPurchasedAnnualOptionPaymentPercent_84E1AF96E1B553960BFBC50B306B9394" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_62AAB99FB58FA4632D00C50B306B618D" xlink:to="loc_trc_LongTermWaterAssetsPurchasedAnnualOptionPaymentPercent_84E1AF96E1B553960BFBC50B306B9394" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/LongTermWaterAssetsIntangibleWaterAssetsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_8D0B0F19285A7A75FD04C50B305B8C2C" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_CF5E1B25C22AE99B75D9C50B305BB6C1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_8D0B0F19285A7A75FD04C50B305B8C2C" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_CF5E1B25C22AE99B75D9C50B305BB6C1" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_B80E1940BACD134631AEC50B305B24EF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_CF5E1B25C22AE99B75D9C50B305BB6C1" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_B80E1940BACD134631AEC50B305B24EF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_C34C7FB831797B95371FC50B305BA600_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_B80E1940BACD134631AEC50B305B24EF" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_C34C7FB831797B95371FC50B305BA600_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_C34C7FB831797B95371FC50B305BA600" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_B80E1940BACD134631AEC50B305B24EF" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_C34C7FB831797B95371FC50B305BA600" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractBasedIntangibleAssetsMember" xlink:label="loc_us-gaap_ContractBasedIntangibleAssetsMember_3D2617E7D6A6E38CB125C50B305BDD8B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_C34C7FB831797B95371FC50B305BA600" xlink:to="loc_us-gaap_ContractBasedIntangibleAssetsMember_3D2617E7D6A6E38CB125C50B305BDD8B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_CounterpartyNameAxis" xlink:label="loc_srt_CounterpartyNameAxis_BC0183163B915A225142C50B305BF935" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_CF5E1B25C22AE99B75D9C50B305BB6C1" xlink:to="loc_srt_CounterpartyNameAxis_BC0183163B915A225142C50B305BF935" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_EE7B894C5ED4BC0480CCC50B305B36BA_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_BC0183163B915A225142C50B305BF935" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_EE7B894C5ED4BC0480CCC50B305B36BA_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_EE7B894C5ED4BC0480CCC50B305B36BA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_BC0183163B915A225142C50B305BF935" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_EE7B894C5ED4BC0480CCC50B305B36BA" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_DudleyRidgeWaterRightsMember" xlink:label="loc_trc_DudleyRidgeWaterRightsMember_3E34BCCAB5B2187B0479C50B305B7490" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_EE7B894C5ED4BC0480CCC50B305B36BA" xlink:to="loc_trc_DudleyRidgeWaterRightsMember_3E34BCCAB5B2187B0479C50B305B7490" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_NickelWaterRightsMember" xlink:label="loc_trc_NickelWaterRightsMember_2B382EADB2C7A7070742C50B305B1348" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_EE7B894C5ED4BC0480CCC50B305B36BA" xlink:to="loc_trc_NickelWaterRightsMember_2B382EADB2C7A7070742C50B305B1348" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TulareLakeBasinWaterRightsMember" xlink:label="loc_trc_TulareLakeBasinWaterRightsMember_2EAF67170A4FF4DB445DC50B305B2D18" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_EE7B894C5ED4BC0480CCC50B305B36BA" xlink:to="loc_trc_TulareLakeBasinWaterRightsMember_2EAF67170A4FF4DB445DC50B305B2D18" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_1ACC8C09450E0A11415BC50B305B7EC5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_8D0B0F19285A7A75FD04C50B305B8C2C" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_1ACC8C09450E0A11415BC50B305B7EC5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_7784E3F1FD1692AC9C89C50B305B5A8F" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_8D0B0F19285A7A75FD04C50B305B8C2C" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_7784E3F1FD1692AC9C89C50B305B5A8F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_C1B74421C5D0F1020E13C50B305BC071" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_8D0B0F19285A7A75FD04C50B305B8C2C" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_C1B74421C5D0F1020E13C50B305BC071" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TangibleWaterAssetsBankedWaterandWaterContractRights" xlink:label="loc_trc_TangibleWaterAssetsBankedWaterandWaterContractRights_2BB272891A847AE7256AC50B305B492C" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_8D0B0F19285A7A75FD04C50B305B8C2C" xlink:to="loc_trc_TangibleWaterAssetsBankedWaterandWaterContractRights_2BB272891A847AE7256AC50B305B492C" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LongTermAssetsHeldForFutureUseOrSale" xlink:label="loc_trc_LongTermAssetsHeldForFutureUseOrSale_64312CD7F72980A5C834C50B305B02E6" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_8D0B0F19285A7A75FD04C50B305B8C2C" xlink:to="loc_trc_LongTermAssetsHeldForFutureUseOrSale_64312CD7F72980A5C834C50B305B02E6" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/LongTermWaterAssetsRevenuesAndCostOfSalesDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/LongTermWaterAssetsTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/LongTermWaterAssetsTangibleWaterAssetsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleLineItems" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_AF913C89ED447F7EE87CC50B305B0389" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable" xlink:label="loc_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_8C649AFCD2ECB41C98E7C50B305B7A8A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_AF913C89ED447F7EE87CC50B305B0389" xlink:to="loc_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_8C649AFCD2ECB41C98E7C50B305B7A8A" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_1E9FA0D3C5214EFF0D75C50B305B388D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_8C649AFCD2ECB41C98E7C50B305B7A8A" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_1E9FA0D3C5214EFF0D75C50B305B388D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleNameDomain" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_3DD1A22E43D5E637F32DC50B305B1D10_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_1E9FA0D3C5214EFF0D75C50B305B388D" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_3DD1A22E43D5E637F32DC50B305B1D10_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleNameDomain" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_3DD1A22E43D5E637F32DC50B305B1D10" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_1E9FA0D3C5214EFF0D75C50B305B388D" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_3DD1A22E43D5E637F32DC50B305B1D10" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_BankedWaterAndWaterForFutureDeliveryMember" xlink:label="loc_trc_BankedWaterAndWaterForFutureDeliveryMember_38EE99FD1F273EC2058AC50B305BC724" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_3DD1A22E43D5E637F32DC50B305B1D10" xlink:to="loc_trc_BankedWaterAndWaterForFutureDeliveryMember_38EE99FD1F273EC2058AC50B305BC724" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TransferableWaterMember" xlink:label="loc_trc_TransferableWaterMember_ED78311D717904F1D1A6C50B305B73D8" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_3DD1A22E43D5E637F32DC50B305B1D10" xlink:to="loc_trc_TransferableWaterMember_ED78311D717904F1D1A6C50B305B73D8" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TangibleWaterAssetsBankedWaterandWaterContractRights" xlink:label="loc_trc_TangibleWaterAssetsBankedWaterandWaterContractRights_C1228DDA6A7E024ADC52C50B305B0B9B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_AF913C89ED447F7EE87CC50B305B0389" xlink:to="loc_trc_TangibleWaterAssetsBankedWaterandWaterContractRights_C1228DDA6A7E024ADC52C50B305B0B9B" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/LongTermWaterAssetsVolumeOfWaterAssetsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleLineItems" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_76DFC19B322D066D19A5C50B304B0CE0" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable" xlink:label="loc_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_0006F95BFA227B7E0386C50B304B307D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_76DFC19B322D066D19A5C50B304B0CE0" xlink:to="loc_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_0006F95BFA227B7E0386C50B304B307D" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_CounterpartyNameAxis" xlink:label="loc_srt_CounterpartyNameAxis_699C56498285255E44BAC50B304B4BC2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfLongLivedAssetsHeldForSaleTable_0006F95BFA227B7E0386C50B304B307D" xlink:to="loc_srt_CounterpartyNameAxis_699C56498285255E44BAC50B304B4BC2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_B23B9845D6BC35742579C50B304B6B81_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_699C56498285255E44BAC50B304B4BC2" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_B23B9845D6BC35742579C50B304B6B81_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_B23B9845D6BC35742579C50B304B6B81" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_699C56498285255E44BAC50B304B4BC2" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_B23B9845D6BC35742579C50B304B6B81" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_AntelopeValleyEastKernWaterAgencyMember" xlink:label="loc_trc_AntelopeValleyEastKernWaterAgencyMember_D3D1C6B2324680F1EE41C50B304BA01B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_B23B9845D6BC35742579C50B304B6B81" xlink:to="loc_trc_AntelopeValleyEastKernWaterAgencyMember_D3D1C6B2324680F1EE41C50B304BA01B" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_WheelerRidgeMaricopaWaterStorageDistrictMember" xlink:label="loc_trc_WheelerRidgeMaricopaWaterStorageDistrictMember_33C86104F5A4FD66698BC50B304B7DB7" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_B23B9845D6BC35742579C50B304B6B81" xlink:to="loc_trc_WheelerRidgeMaricopaWaterStorageDistrictMember_33C86104F5A4FD66698BC50B304B7DB7" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TejonCastacWaterDistrictMember" xlink:label="loc_trc_TejonCastacWaterDistrictMember_ADD08A5885827D04372AC50B304B752D" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_B23B9845D6BC35742579C50B304B6B81" xlink:to="loc_trc_TejonCastacWaterDistrictMember_ADD08A5885827D04372AC50B304B752D" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LongTermWaterAssetsBankedWaterAndWaterContractRightsAbstract" xlink:label="loc_trc_LongTermWaterAssetsBankedWaterAndWaterContractRightsAbstract_7DA0D1AE0C07957CF036C50B304BA484" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_76DFC19B322D066D19A5C50B304B0CE0" xlink:to="loc_trc_LongTermWaterAssetsBankedWaterAndWaterContractRightsAbstract_7DA0D1AE0C07957CF036C50B304BA484" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LongtermWaterAssetsBankedWaterHeldatAgencyOwnedWaterBankVolume" xlink:label="loc_trc_LongtermWaterAssetsBankedWaterHeldatAgencyOwnedWaterBankVolume_40FF345021FFC9850F4DC50B304BEB35" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_LongTermWaterAssetsBankedWaterAndWaterContractRightsAbstract_7DA0D1AE0C07957CF036C50B304BA484" xlink:to="loc_trc_LongtermWaterAssetsBankedWaterHeldatAgencyOwnedWaterBankVolume_40FF345021FFC9850F4DC50B304BEB35" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LongtermWaterAssetsBankedWaterHeldatCompanyOwnedWaterBankVolume" xlink:label="loc_trc_LongtermWaterAssetsBankedWaterHeldatCompanyOwnedWaterBankVolume_8BE23EE644F764DD8D02C50B304BCC5D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_LongTermWaterAssetsBankedWaterAndWaterContractRightsAbstract_7DA0D1AE0C07957CF036C50B304BA484" xlink:to="loc_trc_LongtermWaterAssetsBankedWaterHeldatCompanyOwnedWaterBankVolume_8BE23EE644F764DD8D02C50B304BCC5D" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LongtermWaterAssetsTransferrableWaterVolume" xlink:label="loc_trc_LongtermWaterAssetsTransferrableWaterVolume_483DBC5BFA7AE93144F2C50B304B8FED" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_LongTermWaterAssetsBankedWaterAndWaterContractRightsAbstract_7DA0D1AE0C07957CF036C50B304BA484" xlink:to="loc_trc_LongtermWaterAssetsTransferrableWaterVolume_483DBC5BFA7AE93144F2C50B304B8FED" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LongtermWaterAssetsBankedWaterandWaterContractRightsVolume" xlink:label="loc_trc_LongtermWaterAssetsBankedWaterandWaterContractRightsVolume_8DFEBEF53B19F6B716E0C50B304BA2F6" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_LongTermWaterAssetsBankedWaterAndWaterContractRightsAbstract_7DA0D1AE0C07957CF036C50B304BA484" xlink:to="loc_trc_LongtermWaterAssetsBankedWaterandWaterContractRightsVolume_8DFEBEF53B19F6B716E0C50B304BA2F6" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LongtermWaterAssetsWaterContractsVolume" xlink:label="loc_trc_LongtermWaterAssetsWaterContractsVolume_1EAF3F2B39E89902B487C50B304BEA43" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_76DFC19B322D066D19A5C50B304B0CE0" xlink:to="loc_trc_LongtermWaterAssetsWaterContractsVolume_1EAF3F2B39E89902B487C50B304BEA43" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_RelatedPartyTransactionLongtermWaterAssetsWaterContractsVolume" xlink:label="loc_trc_RelatedPartyTransactionLongtermWaterAssetsWaterContractsVolume_64D0ABC1F26779762511C50B305B3F18" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_76DFC19B322D066D19A5C50B304B0CE0" xlink:to="loc_trc_RelatedPartyTransactionLongtermWaterAssetsWaterContractsVolume_64D0ABC1F26779762511C50B305B3F18" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LongtermWaterAssetsIntangibleWaterContractsVolume" xlink:label="loc_trc_LongtermWaterAssetsIntangibleWaterContractsVolume_7A9BC9AE795CD3911A14C50B305BFE72" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_76DFC19B322D066D19A5C50B304B0CE0" xlink:to="loc_trc_LongtermWaterAssetsIntangibleWaterContractsVolume_7A9BC9AE795CD3911A14C50B305BFE72" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LongTermWaterAssetsContractswithCompany" xlink:label="loc_trc_LongTermWaterAssetsContractswithCompany_F42D4F1EAA7D36ABAB43C50B305B9327" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleLineItems_76DFC19B322D066D19A5C50B304B0CE0" xlink:to="loc_trc_LongTermWaterAssetsContractswithCompany_F42D4F1EAA7D36ABAB43C50B305B9327" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/MarketableSecurities" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/MarketableSecuritiesAdditionalInformationDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/MarketableSecuritiesAvailableForSaleSecuritiesByMaturitiesDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_BBE3021273B5BC0AD03DC50B308A395F" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesTable" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_732D89F2F3CCA2051362C50B308AF3B5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_BBE3021273B5BC0AD03DC50B308A395F" xlink:to="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_732D89F2F3CCA2051362C50B308AF3B5" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="loc_us-gaap_FinancialInstrumentAxis_6C12564B06F49E51995DC50B308A42E3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_732D89F2F3CCA2051362C50B308AF3B5" xlink:to="loc_us-gaap_FinancialInstrumentAxis_6C12564B06F49E51995DC50B308A42E3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_AC2AB970D99016CED908C50B308A3213_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_6C12564B06F49E51995DC50B308A42E3" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_AC2AB970D99016CED908C50B308A3213_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_AC2AB970D99016CED908C50B308A3213" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_6C12564B06F49E51995DC50B308A42E3" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_AC2AB970D99016CED908C50B308A3213" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CertificatesOfDepositMember" xlink:label="loc_us-gaap_CertificatesOfDepositMember_1E3F96FAD416433462AEC50B308A78C8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_AC2AB970D99016CED908C50B308A3213" xlink:to="loc_us-gaap_CertificatesOfDepositMember_1E3F96FAD416433462AEC50B308A78C8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_USTreasuryAndGovernmentShorttermDebtSecuritiesMember" xlink:label="loc_us-gaap_USTreasuryAndGovernmentShorttermDebtSecuritiesMember_8897A53F8303F38D85D9C50B308A5DFC" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_AC2AB970D99016CED908C50B308A3213" xlink:to="loc_us-gaap_USTreasuryAndGovernmentShorttermDebtSecuritiesMember_8897A53F8303F38D85D9C50B308A5DFC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateNoteSecuritiesMember" xlink:label="loc_us-gaap_CorporateNoteSecuritiesMember_6530B894EE3CB5645694C50B308A7CE1" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_AC2AB970D99016CED908C50B308A3213" xlink:to="loc_us-gaap_CorporateNoteSecuritiesMember_6530B894EE3CB5645694C50B308A7CE1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MunicipalBondsMember" xlink:label="loc_us-gaap_MunicipalBondsMember_57FE6532DFD409052E11C50B308AF289" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_AC2AB970D99016CED908C50B308A3213" xlink:to="loc_us-gaap_MunicipalBondsMember_57FE6532DFD409052E11C50B308AF289" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_AvailableForSaleSecuritiesFiscalYearMaturityAbstract" xlink:label="loc_trc_AvailableForSaleSecuritiesFiscalYearMaturityAbstract_3821F241C18BAC12F1EBC50B308ABC99" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_BBE3021273B5BC0AD03DC50B308A395F" xlink:to="loc_trc_AvailableForSaleSecuritiesFiscalYearMaturityAbstract_3821F241C18BAC12F1EBC50B308ABC99" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_DebtSecuritiesAvailableforSaleSecuritiesMaturitiesYearOneatPar" xlink:label="loc_trc_DebtSecuritiesAvailableforSaleSecuritiesMaturitiesYearOneatPar_8C2508AC036FB600C79CC50B308AB2BB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_AvailableForSaleSecuritiesFiscalYearMaturityAbstract_3821F241C18BAC12F1EBC50B308ABC99" xlink:to="loc_trc_DebtSecuritiesAvailableforSaleSecuritiesMaturitiesYearOneatPar_8C2508AC036FB600C79CC50B308AB2BB" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_DebtSecuritiesAvailableforSaleSecuritiesMaturitiesYearTwoatPar" xlink:label="loc_trc_DebtSecuritiesAvailableforSaleSecuritiesMaturitiesYearTwoatPar_785A12D16845E5EB1918C50B308AFA59" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_AvailableForSaleSecuritiesFiscalYearMaturityAbstract_3821F241C18BAC12F1EBC50B308ABC99" xlink:to="loc_trc_DebtSecuritiesAvailableforSaleSecuritiesMaturitiesYearTwoatPar_785A12D16845E5EB1918C50B308AFA59" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_DebtSecuritiesAvailableforSaleSecuritiesMaturitiesYearThreeatPar" xlink:label="loc_trc_DebtSecuritiesAvailableforSaleSecuritiesMaturitiesYearThreeatPar_10D41DB3798F20E1DE18C50B308ADABD" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_AvailableForSaleSecuritiesFiscalYearMaturityAbstract_3821F241C18BAC12F1EBC50B308ABC99" xlink:to="loc_trc_DebtSecuritiesAvailableforSaleSecuritiesMaturitiesYearThreeatPar_10D41DB3798F20E1DE18C50B308ADABD" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_DebtSecuritiesAvailableforSaleSecuritiesMaturitiesatPar" xlink:label="loc_trc_DebtSecuritiesAvailableforSaleSecuritiesMaturitiesatPar_25F3470444ED52049573C50B308A8D1B" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_AvailableForSaleSecuritiesFiscalYearMaturityAbstract_3821F241C18BAC12F1EBC50B308ABC99" xlink:to="loc_trc_DebtSecuritiesAvailableforSaleSecuritiesMaturitiesatPar_25F3470444ED52049573C50B308A8D1B" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/MarketableSecuritiesSummaryOfAvailableForSaleSecuritiesDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_C36C95AC4A8D38A4771CC50B309A2313" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_BE282DFAC78381D157C4C50B309A6F36" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_C36C95AC4A8D38A4771CC50B309A2313" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_BE282DFAC78381D157C4C50B309A6F36" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_34EB7B85572C049457B2C50B309A28C8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_BE282DFAC78381D157C4C50B309A6F36" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_34EB7B85572C049457B2C50B309A28C8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_755FDF308DB5FBAD9DA9C50B309A0198_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_34EB7B85572C049457B2C50B309A28C8" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_755FDF308DB5FBAD9DA9C50B309A0198_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_035C43B183E0D166DE65C50B309A06D1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_34EB7B85572C049457B2C50B309A28C8" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_035C43B183E0D166DE65C50B309A06D1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_755FDF308DB5FBAD9DA9C50B309A0198" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_035C43B183E0D166DE65C50B309A06D1" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_755FDF308DB5FBAD9DA9C50B309A0198" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_B6B449DBE10287715188C50B309A326A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_035C43B183E0D166DE65C50B309A06D1" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_B6B449DBE10287715188C50B309A326A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_C17699C77BAB1F7A52E3C50B309A3081" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_035C43B183E0D166DE65C50B309A06D1" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_C17699C77BAB1F7A52E3C50B309A3081" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="loc_us-gaap_FinancialInstrumentAxis_94FA35C28DE9CB9F1333C50B309AEC02" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_BE282DFAC78381D157C4C50B309A6F36" xlink:to="loc_us-gaap_FinancialInstrumentAxis_94FA35C28DE9CB9F1333C50B309AEC02" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8F41908B99A437093CB4C50B309AD1F0_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_94FA35C28DE9CB9F1333C50B309AEC02" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8F41908B99A437093CB4C50B309AD1F0_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8F41908B99A437093CB4C50B309AD1F0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_94FA35C28DE9CB9F1333C50B309AEC02" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8F41908B99A437093CB4C50B309AD1F0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CertificatesOfDepositMember" xlink:label="loc_us-gaap_CertificatesOfDepositMember_4450814B2E9273521102C50B309A9EC5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8F41908B99A437093CB4C50B309AD1F0" xlink:to="loc_us-gaap_CertificatesOfDepositMember_4450814B2E9273521102C50B309A9EC5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_USTreasuryAndGovernmentShorttermDebtSecuritiesMember" xlink:label="loc_us-gaap_USTreasuryAndGovernmentShorttermDebtSecuritiesMember_08C17DC34AF32B8C8E97C50B309AA959" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8F41908B99A437093CB4C50B309AD1F0" xlink:to="loc_us-gaap_USTreasuryAndGovernmentShorttermDebtSecuritiesMember_08C17DC34AF32B8C8E97C50B309AA959" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateNoteSecuritiesMember" xlink:label="loc_us-gaap_CorporateNoteSecuritiesMember_DABA7E3DAA3DFA3028F9C50B309A0DA2" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8F41908B99A437093CB4C50B309AD1F0" xlink:to="loc_us-gaap_CorporateNoteSecuritiesMember_DABA7E3DAA3DFA3028F9C50B309A0DA2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MunicipalBondsMember" xlink:label="loc_us-gaap_MunicipalBondsMember_9809671696AE01CDB20CC50B309A4A69" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8F41908B99A437093CB4C50B309AD1F0" xlink:to="loc_us-gaap_MunicipalBondsMember_9809671696AE01CDB20CC50B309A4A69" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_77E0751A237F8E622A49C50B309A1FF6" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_BE282DFAC78381D157C4C50B309A6F36" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_77E0751A237F8E622A49C50B309A1FF6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_A48AA69A9112BE6E1FB6C50B309AE5A8_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_77E0751A237F8E622A49C50B309A1FF6" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_A48AA69A9112BE6E1FB6C50B309AE5A8_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_A48AA69A9112BE6E1FB6C50B309AE5A8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_77E0751A237F8E622A49C50B309A1FF6" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_A48AA69A9112BE6E1FB6C50B309AE5A8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_2191AC8C5438A274E363C50B309AB155" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_A48AA69A9112BE6E1FB6C50B309AE5A8" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_2191AC8C5438A274E363C50B309AB155" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_6DF2DFA7571C1B22E58FC50B309A4F72" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_A48AA69A9112BE6E1FB6C50B309AE5A8" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_6DF2DFA7571C1B22E58FC50B309A4F72" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_54B3FD3B84E39F6D610FC50B309ACC80" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_C36C95AC4A8D38A4771CC50B309A2313" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_54B3FD3B84E39F6D610FC50B309ACC80" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_99B92FA3278E81D7FBD2C50B309AAE10" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_C36C95AC4A8D38A4771CC50B309A2313" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_99B92FA3278E81D7FBD2C50B309AAE10" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_513D1E6996FD8EBE9298C50B309AF700" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_C36C95AC4A8D38A4771CC50B309A2313" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_513D1E6996FD8EBE9298C50B309AF700" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_5D253A375E43C12D1308C50B309A23D6" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_C36C95AC4A8D38A4771CC50B309A2313" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_5D253A375E43C12D1308C50B309A23D6" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/MarketableSecuritiesTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/OtherLiabilities" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/OtherLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_1818E12A93DA84374570C50B302AC256" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_8B4526D3AD180D726139C50B3019029C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_1818E12A93DA84374570C50B302AC256" xlink:to="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_8B4526D3AD180D726139C50B3019029C" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_976D05BE3AC904F9F7D4C50B301986DC" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_8B4526D3AD180D726139C50B3019029C" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_976D05BE3AC904F9F7D4C50B301986DC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_FDE910E1519072EEBAACC50B3019B408_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_976D05BE3AC904F9F7D4C50B301986DC" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_FDE910E1519072EEBAACC50B3019B408_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_FDE910E1519072EEBAACC50B3019B408" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_976D05BE3AC904F9F7D4C50B301986DC" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_FDE910E1519072EEBAACC50B3019B408" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_B469F833954C5A588259C50B3019D62F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_FDE910E1519072EEBAACC50B3019B408" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_B469F833954C5A588259C50B3019D62F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember" xlink:label="loc_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_03BF949DAF3FA547210EC50B30291E39" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_FDE910E1519072EEBAACC50B3019B408" xlink:to="loc_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_03BF949DAF3FA547210EC50B30291E39" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_FCA7E5AECBBDB358ABBCC50B30296D7B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_8B4526D3AD180D726139C50B3019029C" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_FCA7E5AECBBDB358ABBCC50B30296D7B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_DAEA93B7FE314F91B7FCC50B30297881_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_FCA7E5AECBBDB358ABBCC50B30296D7B" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_DAEA93B7FE314F91B7FCC50B30297881_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_DAEA93B7FE314F91B7FCC50B30297881" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_FCA7E5AECBBDB358ABBCC50B30296D7B" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_DAEA93B7FE314F91B7FCC50B30297881" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestRateSwapMember" xlink:label="loc_us-gaap_InterestRateSwapMember_4515FB51C1CF129F1835C50B30297DA1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_DAEA93B7FE314F91B7FCC50B30297881" xlink:to="loc_us-gaap_InterestRateSwapMember_4515FB51C1CF129F1835C50B30297DA1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent" xlink:label="loc_us-gaap_PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent_EF3C44F4D9096F58EE10C50B302AF79C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_1818E12A93DA84374570C50B302AC256" xlink:to="loc_us-gaap_PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent_EF3C44F4D9096F58EE10C50B302AF79C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_ECF67B57D52C6CA30361C50B302A1362" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_1818E12A93DA84374570C50B302AC256" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_ECF67B57D52C6CA30361C50B302A1362" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherSundryLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherSundryLiabilitiesNoncurrent_76714565F5FD1C1637CBC50B302A7C66" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_1818E12A93DA84374570C50B302AC256" xlink:to="loc_us-gaap_OtherSundryLiabilitiesNoncurrent_76714565F5FD1C1637CBC50B302A7C66" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_A5811FB9A606CDD8AC92C50B302B61FF" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_1818E12A93DA84374570C50B302AC256" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_A5811FB9A606CDD8AC92C50B302B61FF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_22CD0CA1853683357242C50B302BED08" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_1818E12A93DA84374570C50B302AC256" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_22CD0CA1853683357242C50B302BED08" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/OtherLiabilitiesTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/RealEstate" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/RealEstateScheduleOfRealEstateDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1303706183CF573C1219C50B307A03FA" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_272AF33CA5268095C995C50B307A427C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1303706183CF573C1219C50B307A03FA" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_272AF33CA5268095C995C50B307A427C" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_417729F77D3ED2CA0A8EC50B307A2A74" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_272AF33CA5268095C995C50B307A427C" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_417729F77D3ED2CA0A8EC50B307A2A74" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_4EF1AC983B4C18F3410BC50B307A0234_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_417729F77D3ED2CA0A8EC50B307A2A74" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_4EF1AC983B4C18F3410BC50B307A0234_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_4EF1AC983B4C18F3410BC50B307A0234" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_417729F77D3ED2CA0A8EC50B307A2A74" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_4EF1AC983B4C18F3410BC50B307A0234" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TejonMountainVillageLlcMember" xlink:label="loc_trc_TejonMountainVillageLlcMember_A0E2E5D596752A86FB30C50B307ADE29" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_4EF1AC983B4C18F3410BC50B307A0234" xlink:to="loc_trc_TejonMountainVillageLlcMember_A0E2E5D596752A86FB30C50B307ADE29" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_CentennialFoundersLlcMember" xlink:label="loc_trc_CentennialFoundersLlcMember_79FB3143FE268B94FA44C50B307A06B4" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_4EF1AC983B4C18F3410BC50B307A0234" xlink:to="loc_trc_CentennialFoundersLlcMember_79FB3143FE268B94FA44C50B307A06B4" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_GrapevineMember" xlink:label="loc_trc_GrapevineMember_8B02EC30171D32743B50C50B307AB58D" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_4EF1AC983B4C18F3410BC50B307A0234" xlink:to="loc_trc_GrapevineMember_8B02EC30171D32743B50C50B307AB58D" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TejonRanchCommerceCenterMember" xlink:label="loc_trc_TejonRanchCommerceCenterMember_AB3440C5BE73F697067CC50B307AC4A1" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_4EF1AC983B4C18F3410BC50B307A0234" xlink:to="loc_trc_TejonRanchCommerceCenterMember_AB3440C5BE73F697067CC50B307AC4A1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryRealEstateLandAndLandDevelopmentCosts" xlink:label="loc_us-gaap_InventoryRealEstateLandAndLandDevelopmentCosts_E33FFCDF613409E668F7C50B307A1996" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1303706183CF573C1219C50B307A03FA" xlink:to="loc_us-gaap_InventoryRealEstateLandAndLandDevelopmentCosts_E33FFCDF613409E668F7C50B307A1996" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_InventoryRealEstateImprovementsGross" xlink:label="loc_trc_InventoryRealEstateImprovementsGross_42FB383CA313364702F3C50B307A7350" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1303706183CF573C1219C50B307A03FA" xlink:to="loc_trc_InventoryRealEstateImprovementsGross_42FB383CA313364702F3C50B307A7350" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_InventoryRealEstateImprovementsAccumulatedDepreciation" xlink:label="loc_trc_InventoryRealEstateImprovementsAccumulatedDepreciation_A80D0FA2818ADFB06D72C50B307A2A82" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1303706183CF573C1219C50B307A03FA" xlink:to="loc_trc_InventoryRealEstateImprovementsAccumulatedDepreciation_A80D0FA2818ADFB06D72C50B307A2A82" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryRealEstateImprovements" xlink:label="loc_us-gaap_InventoryRealEstateImprovements_E7DA81CCCED7E2246486C50B307ADC77" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1303706183CF573C1219C50B307A03FA" xlink:to="loc_us-gaap_InventoryRealEstateImprovements_E7DA81CCCED7E2246486C50B307ADC77" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/RealEstateTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/RelatedPartyTransactions" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/RelatedPartyTransactionsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_1D0D0CE359E9477DB5D2C50B2EC251B2" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_F8C8561FA946A00CBB89C50B2EBF8011" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_1D0D0CE359E9477DB5D2C50B2EC251B2" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_F8C8561FA946A00CBB89C50B2EBF8011" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionAxis" xlink:label="loc_us-gaap_RelatedPartyTransactionAxis_E57FCA77BFE0C92F21A2C50B2EBF83CF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_F8C8561FA946A00CBB89C50B2EBF8011" xlink:to="loc_us-gaap_RelatedPartyTransactionAxis_E57FCA77BFE0C92F21A2C50B2EBF83CF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionDomain" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_64787F8253CA8181ADACC50B2EBF90DE_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_E57FCA77BFE0C92F21A2C50B2EBF83CF" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_64787F8253CA8181ADACC50B2EBF90DE_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionDomain" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_64787F8253CA8181ADACC50B2EBF90DE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_E57FCA77BFE0C92F21A2C50B2EBF83CF" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_64787F8253CA8181ADACC50B2EBF90DE" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_StateWaterProjectContractsMember" xlink:label="loc_trc_StateWaterProjectContractsMember_81CF7989B91904F208C1C50B2EC0B5C6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_64787F8253CA8181ADACC50B2EBF90DE" xlink:to="loc_trc_StateWaterProjectContractsMember_81CF7989B91904F208C1C50B2EC0B5C6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_CounterpartyNameAxis" xlink:label="loc_srt_CounterpartyNameAxis_430C5877692119A29AFFC50B2EC03952" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_F8C8561FA946A00CBB89C50B2EBF8011" xlink:to="loc_srt_CounterpartyNameAxis_430C5877692119A29AFFC50B2EC03952" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_BFDDEB08104AFC9A2F03C50B2EC005D6_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_430C5877692119A29AFFC50B2EC03952" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_BFDDEB08104AFC9A2F03C50B2EC005D6_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_BFDDEB08104AFC9A2F03C50B2EC005D6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_430C5877692119A29AFFC50B2EC03952" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_BFDDEB08104AFC9A2F03C50B2EC005D6" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_WheelerRidgeMaricopaWaterStorageDistrictMember" xlink:label="loc_trc_WheelerRidgeMaricopaWaterStorageDistrictMember_0B552F6ACAFCBFFD8F72C50B2EC1C6D4" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_BFDDEB08104AFC9A2F03C50B2EC005D6" xlink:to="loc_trc_WheelerRidgeMaricopaWaterStorageDistrictMember_0B552F6ACAFCBFFD8F72C50B2EC1C6D4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_244402109CB9AD0456A2C50B2EC1F8D7" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_F8C8561FA946A00CBB89C50B2EBF8011" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_244402109CB9AD0456A2C50B2EC1F8D7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="loc_us-gaap_RelatedPartyDomain_4A3DD488F1C6B0BAA3B2C50B2EC16EA3_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_244402109CB9AD0456A2C50B2EC1F8D7" xlink:to="loc_us-gaap_RelatedPartyDomain_4A3DD488F1C6B0BAA3B2C50B2EC16EA3_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="loc_us-gaap_RelatedPartyDomain_4A3DD488F1C6B0BAA3B2C50B2EC16EA3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_244402109CB9AD0456A2C50B2EC1F8D7" xlink:to="loc_us-gaap_RelatedPartyDomain_4A3DD488F1C6B0BAA3B2C50B2EC16EA3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ManagementMember" xlink:label="loc_srt_ManagementMember_DFD6EA77AA33521A1F9BC50B2EC151AD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_4A3DD488F1C6B0BAA3B2C50B2EC16EA3" xlink:to="loc_srt_ManagementMember_DFD6EA77AA33521A1F9BC50B2EC151AD" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_RelatedPartyTransactionAreaofLand" xlink:label="loc_trc_RelatedPartyTransactionAreaofLand_8C5F369159E91B65DE99C50B2EC2BA6E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_1D0D0CE359E9477DB5D2C50B2EC251B2" xlink:to="loc_trc_RelatedPartyTransactionAreaofLand_8C5F369159E91B65DE99C50B2EC2BA6E" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_RelatedPartyTransactionLongtermWaterAssetsWaterContractsVolume" xlink:label="loc_trc_RelatedPartyTransactionLongtermWaterAssetsWaterContractsVolume_1FB515782FE562837921C50B2EC2490C" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_1D0D0CE359E9477DB5D2C50B2EC251B2" xlink:to="loc_trc_RelatedPartyTransactionLongtermWaterAssetsWaterContractsVolume_1FB515782FE562837921C50B2EC2490C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionAmountsOfTransaction" xlink:label="loc_us-gaap_RelatedPartyTransactionAmountsOfTransaction_345BAA572758EA1D9A32C50B2EC2B299" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_1D0D0CE359E9477DB5D2C50B2EC251B2" xlink:to="loc_us-gaap_RelatedPartyTransactionAmountsOfTransaction_345BAA572758EA1D9A32C50B2EC2B299" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/ReportingSegmentsAndRelatedInformation" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/ReportingSegmentsAndRelatedInformationAdditionalInformationDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/ReportingSegmentsAndRelatedInformationInformationPertainingToAssetsOfSegmentsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_24130B875EDD260C76DFC50B2EEFB987" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_0C4B0BA30D17520653C7C50B2EED06E9" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_24130B875EDD260C76DFC50B2EEFB987" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_0C4B0BA30D17520653C7C50B2EED06E9" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_547E450EA9E12BC0FF3BC50B2EED2F17" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_0C4B0BA30D17520653C7C50B2EED06E9" xlink:to="loc_srt_ConsolidationItemsAxis_547E450EA9E12BC0FF3BC50B2EED2F17" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_ECF9249E7EF4AC45DA8DC50B2EEEDC70_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_547E450EA9E12BC0FF3BC50B2EED2F17" xlink:to="loc_srt_ConsolidationItemsDomain_ECF9249E7EF4AC45DA8DC50B2EEEDC70_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_ECF9249E7EF4AC45DA8DC50B2EEEDC70" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_547E450EA9E12BC0FF3BC50B2EED2F17" xlink:to="loc_srt_ConsolidationItemsDomain_ECF9249E7EF4AC45DA8DC50B2EEEDC70" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_6E8D56B38A1D931CA9F6C50B2EEE2FCF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_ECF9249E7EF4AC45DA8DC50B2EEEDC70" xlink:to="loc_us-gaap_OperatingSegmentsMember_6E8D56B38A1D931CA9F6C50B2EEE2FCF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:label="loc_us-gaap_CorporateNonSegmentMember_57AB1AB3D62BBC751FC9C50B2EEE15D8" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_ECF9249E7EF4AC45DA8DC50B2EEEDC70" xlink:to="loc_us-gaap_CorporateNonSegmentMember_57AB1AB3D62BBC751FC9C50B2EEE15D8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_7525F6226217CA6790C1C50B2EEEF396" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_0C4B0BA30D17520653C7C50B2EED06E9" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_7525F6226217CA6790C1C50B2EEEF396" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_24DC9F64A9552581243FC50B2EEE5DB5_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_7525F6226217CA6790C1C50B2EEEF396" xlink:to="loc_us-gaap_SegmentDomain_24DC9F64A9552581243FC50B2EEE5DB5_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_24DC9F64A9552581243FC50B2EEE5DB5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_7525F6226217CA6790C1C50B2EEEF396" xlink:to="loc_us-gaap_SegmentDomain_24DC9F64A9552581243FC50B2EEE5DB5" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_CommercialAndIndustrialMember" xlink:label="loc_trc_CommercialAndIndustrialMember_7F5E7709E38E96C098FAC50B2EEF85C4" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_24DC9F64A9552581243FC50B2EEE5DB5" xlink:to="loc_trc_CommercialAndIndustrialMember_7F5E7709E38E96C098FAC50B2EEF85C4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ResidentialRealEstateMember" xlink:label="loc_us-gaap_ResidentialRealEstateMember_C5C8425981B4D0E5CFD3C50B2EEFAFC1" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_24DC9F64A9552581243FC50B2EEE5DB5" xlink:to="loc_us-gaap_ResidentialRealEstateMember_C5C8425981B4D0E5CFD3C50B2EEFAFC1" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_MineralResourcesMember" xlink:label="loc_trc_MineralResourcesMember_5C5323EA78DFE55F94AFC50B2EEFA9BB" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_24DC9F64A9552581243FC50B2EEE5DB5" xlink:to="loc_trc_MineralResourcesMember_5C5323EA78DFE55F94AFC50B2EEFA9BB" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_FarmingAndAgricultureMember" xlink:label="loc_trc_FarmingAndAgricultureMember_3BFC3958E1671B1D673AC50B2EEF9CC5" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_24DC9F64A9552581243FC50B2EEE5DB5" xlink:to="loc_trc_FarmingAndAgricultureMember_3BFC3958E1671B1D673AC50B2EEF9CC5" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_RanchOperationsMember" xlink:label="loc_trc_RanchOperationsMember_E5894FB403498F96CCDDC50B2EEF54EE" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_24DC9F64A9552581243FC50B2EEE5DB5" xlink:to="loc_trc_RanchOperationsMember_E5894FB403498F96CCDDC50B2EEF54EE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationAdditionalInformationAbstract" xlink:label="loc_us-gaap_SegmentReportingInformationAdditionalInformationAbstract_EEFEB01A980C572AFC36C50B2EEF49AA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_24130B875EDD260C76DFC50B2EEFB987" xlink:to="loc_us-gaap_SegmentReportingInformationAdditionalInformationAbstract_EEFEB01A980C572AFC36C50B2EEF49AA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_B218037F56C81F4D4876C50B2EEF41DB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationAdditionalInformationAbstract_EEFEB01A980C572AFC36C50B2EEF49AA" xlink:to="loc_us-gaap_Assets_B218037F56C81F4D4876C50B2EEF41DB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_49656AEE4E1BDAD8D4FFC50B2EEF34BF" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationAdditionalInformationAbstract_EEFEB01A980C572AFC36C50B2EEF49AA" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_49656AEE4E1BDAD8D4FFC50B2EEF34BF" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_CapitalExpenditures" xlink:label="loc_trc_CapitalExpenditures_7BAC165B99DEE58207AEC50B2EEF4D8D" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationAdditionalInformationAbstract_EEFEB01A980C572AFC36C50B2EEF49AA" xlink:to="loc_trc_CapitalExpenditures_7BAC165B99DEE58207AEC50B2EEF4D8D" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/ReportingSegmentsAndRelatedInformationReconciliationOfRevenuesSegmentProfitsLossesAndNetIncomeLossDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_E101CC670833E4C1EE95C50B2F0E0D43" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_C0A6FCB1753570CF9709C50B2F0B7129" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_E101CC670833E4C1EE95C50B2F0E0D43" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_C0A6FCB1753570CF9709C50B2F0B7129" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_DF53BE3F58E254BD747EC50B2F0B5182" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_C0A6FCB1753570CF9709C50B2F0B7129" xlink:to="loc_srt_ConsolidationItemsAxis_DF53BE3F58E254BD747EC50B2F0B5182" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_6957078E691C9F0CFD83C50B2F0BC2C3_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_DF53BE3F58E254BD747EC50B2F0B5182" xlink:to="loc_srt_ConsolidationItemsDomain_6957078E691C9F0CFD83C50B2F0BC2C3_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_6957078E691C9F0CFD83C50B2F0BC2C3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_DF53BE3F58E254BD747EC50B2F0B5182" xlink:to="loc_srt_ConsolidationItemsDomain_6957078E691C9F0CFD83C50B2F0BC2C3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_757873B63D77D0BADE3AC50B2F0CD293" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_6957078E691C9F0CFD83C50B2F0BC2C3" xlink:to="loc_us-gaap_OperatingSegmentsMember_757873B63D77D0BADE3AC50B2F0CD293" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:label="loc_us-gaap_CorporateNonSegmentMember_443EC91AAE76F7655A41C50B2F0C99E5" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_6957078E691C9F0CFD83C50B2F0BC2C3" xlink:to="loc_us-gaap_CorporateNonSegmentMember_443EC91AAE76F7655A41C50B2F0C99E5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_F97801152423027EA167C50B2F0CB583" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_C0A6FCB1753570CF9709C50B2F0B7129" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_F97801152423027EA167C50B2F0CB583" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_C4F0CC202A92E420F432C50B2F0CC0FE_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_F97801152423027EA167C50B2F0CB583" xlink:to="loc_us-gaap_SegmentDomain_C4F0CC202A92E420F432C50B2F0CC0FE_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_C4F0CC202A92E420F432C50B2F0CC0FE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_F97801152423027EA167C50B2F0CB583" xlink:to="loc_us-gaap_SegmentDomain_C4F0CC202A92E420F432C50B2F0CC0FE" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_CommercialAndIndustrialMember" xlink:label="loc_trc_CommercialAndIndustrialMember_9EEB0D975A3C534FBC7AC50B2F0D9FD0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_C4F0CC202A92E420F432C50B2F0CC0FE" xlink:to="loc_trc_CommercialAndIndustrialMember_9EEB0D975A3C534FBC7AC50B2F0D9FD0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ResidentialRealEstateMember" xlink:label="loc_us-gaap_ResidentialRealEstateMember_95EE4A08F8DB61E571BDC50B2F0D4A59" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_C4F0CC202A92E420F432C50B2F0CC0FE" xlink:to="loc_us-gaap_ResidentialRealEstateMember_95EE4A08F8DB61E571BDC50B2F0D4A59" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_MineralResourcesMember" xlink:label="loc_trc_MineralResourcesMember_5663C4909A4EDA8DD2B3C50B2F0D3564" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_C4F0CC202A92E420F432C50B2F0CC0FE" xlink:to="loc_trc_MineralResourcesMember_5663C4909A4EDA8DD2B3C50B2F0D3564" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_FarmingAndAgricultureMember" xlink:label="loc_trc_FarmingAndAgricultureMember_4E550B964616F8DE4FB8C50B2F0D3266" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_C4F0CC202A92E420F432C50B2F0CC0FE" xlink:to="loc_trc_FarmingAndAgricultureMember_4E550B964616F8DE4FB8C50B2F0D3266" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_RanchOperationsMember" xlink:label="loc_trc_RanchOperationsMember_AD5D7D1377BFC5FD104EC50B2F0E8B49" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_C4F0CC202A92E420F432C50B2F0CC0FE" xlink:to="loc_trc_RanchOperationsMember_AD5D7D1377BFC5FD104EC50B2F0E8B49" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationRevenueAbstract" xlink:label="loc_us-gaap_SegmentReportingInformationRevenueAbstract_8C43768CDE478A8FCBD0C50B2F0ED055" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_E101CC670833E4C1EE95C50B2F0E0D43" xlink:to="loc_us-gaap_SegmentReportingInformationRevenueAbstract_8C43768CDE478A8FCBD0C50B2F0ED055" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_C0565515E0DDF42C3A28C50B2F0E6268" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationRevenueAbstract_8C43768CDE478A8FCBD0C50B2F0ED055" xlink:to="loc_us-gaap_Revenues_C0565515E0DDF42C3A28C50B2F0E6268" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_816AA102FBA149BEA7C2C50B2F0E2259" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationRevenueAbstract_8C43768CDE478A8FCBD0C50B2F0ED055" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_816AA102FBA149BEA7C2C50B2F0E2259" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InvestmentIncomeNet" xlink:label="loc_us-gaap_InvestmentIncomeNet_98079191839F2E5B6FEBC50B2F0F4C71" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationRevenueAbstract_8C43768CDE478A8FCBD0C50B2F0ED055" xlink:to="loc_us-gaap_InvestmentIncomeNet_98079191839F2E5B6FEBC50B2F0F4C71" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_RevenueandOtherIncome" xlink:label="loc_trc_RevenueandOtherIncome_AEF4C3D75FC38FB57447C50B2F0FB129" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationRevenueAbstract_8C43768CDE478A8FCBD0C50B2F0ED055" xlink:to="loc_trc_RevenueandOtherIncome_AEF4C3D75FC38FB57447C50B2F0FB129" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationIncomeLossBeforeIncomeTaxesAbstract" xlink:label="loc_us-gaap_SegmentReportingInformationIncomeLossBeforeIncomeTaxesAbstract_2B0461016FF6CC7A9C53C50B2F0F1359" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_E101CC670833E4C1EE95C50B2F0E0D43" xlink:to="loc_us-gaap_SegmentReportingInformationIncomeLossBeforeIncomeTaxesAbstract_2B0461016FF6CC7A9C53C50B2F0F1359" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_A9E2959E8608C7C55651C50B2F0FCE57" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationIncomeLossBeforeIncomeTaxesAbstract_2B0461016FF6CC7A9C53C50B2F0F1359" xlink:to="loc_us-gaap_OperatingIncomeLoss_A9E2959E8608C7C55651C50B2F0FCE57" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherNonoperatingExpense" xlink:label="loc_us-gaap_OtherNonoperatingExpense_9D0AF16B9C475D3D01B6C50B2F0FCC17" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationIncomeLossBeforeIncomeTaxesAbstract_2B0461016FF6CC7A9C53C50B2F0F1359" xlink:to="loc_us-gaap_OtherNonoperatingExpense_9D0AF16B9C475D3D01B6C50B2F0FCC17" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostsAndExpenses" xlink:label="loc_us-gaap_CostsAndExpenses_6D5D1D83AB99A8EF2803C50B2F0F768E" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationIncomeLossBeforeIncomeTaxesAbstract_2B0461016FF6CC7A9C53C50B2F0F1359" xlink:to="loc_us-gaap_CostsAndExpenses_6D5D1D83AB99A8EF2803C50B2F0F768E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_7FC05568EDA889C95033C50B2F105AD8" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationIncomeLossBeforeIncomeTaxesAbstract_2B0461016FF6CC7A9C53C50B2F0F1359" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_7FC05568EDA889C95033C50B2F105AD8" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/ReportingSegmentsAndRelatedInformationRevenueComponentsOfFarmingSegmentsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems" xlink:label="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_C03A6E1AD9E3CAE88761C50B2EEF6DC9" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable" xlink:label="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_ABA54AE76DBB3215DFAAC50B2EEF6D13" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_C03A6E1AD9E3CAE88761C50B2EEF6DC9" xlink:to="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_ABA54AE76DBB3215DFAAC50B2EEF6D13" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_FFD10CD337EF489B733AC50B2EEF16F9" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_ABA54AE76DBB3215DFAAC50B2EEF6D13" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_FFD10CD337EF489B733AC50B2EEF16F9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_8AC8DA3EBE7AB20AE661C50B2EEF9534_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_FFD10CD337EF489B733AC50B2EEF16F9" xlink:to="loc_us-gaap_SegmentDomain_8AC8DA3EBE7AB20AE661C50B2EEF9534_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_8AC8DA3EBE7AB20AE661C50B2EEF9534" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_FFD10CD337EF489B733AC50B2EEF16F9" xlink:to="loc_us-gaap_SegmentDomain_8AC8DA3EBE7AB20AE661C50B2EEF9534" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_FarmingAndAgricultureMember" xlink:label="loc_trc_FarmingAndAgricultureMember_0C3BC15A7B86758DD307C50B2EEFF330" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_8AC8DA3EBE7AB20AE661C50B2EEF9534" xlink:to="loc_trc_FarmingAndAgricultureMember_0C3BC15A7B86758DD307C50B2EEFF330" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_CA3F0074BAAFB9B2F278C50B2EEF4802" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_C03A6E1AD9E3CAE88761C50B2EEF6DC9" xlink:to="loc_us-gaap_Revenues_CA3F0074BAAFB9B2F278C50B2EEF4802" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostsAndExpenses" xlink:label="loc_us-gaap_CostsAndExpenses_FFC0388C25F40F630668C50B2EEF3EDA" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_C03A6E1AD9E3CAE88761C50B2EEF6DC9" xlink:to="loc_us-gaap_CostsAndExpenses_FFC0388C25F40F630668C50B2EEF3EDA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_7575813A488EFE259414C50B2EEF80B0" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_C03A6E1AD9E3CAE88761C50B2EEF6DC9" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_7575813A488EFE259414C50B2EEF80B0" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/ReportingSegmentsAndRelatedInformationRevenueComponentsOfMineralResourcesSegmentDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems" xlink:label="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_16B0D8F56354C5320F56C50B2EFF396F" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable" xlink:label="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_5AD55E8E0D25CBD00598C50B2EEFC167" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_16B0D8F56354C5320F56C50B2EFF396F" xlink:to="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_5AD55E8E0D25CBD00598C50B2EEFC167" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_B63E88E010D1969F6952C50B2EEF22DF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_5AD55E8E0D25CBD00598C50B2EEFC167" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_B63E88E010D1969F6952C50B2EEF22DF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_D1A346E94A3802CC87B9C50B2EEF1529_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_B63E88E010D1969F6952C50B2EEF22DF" xlink:to="loc_us-gaap_SegmentDomain_D1A346E94A3802CC87B9C50B2EEF1529_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_D1A346E94A3802CC87B9C50B2EEF1529" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_B63E88E010D1969F6952C50B2EEF22DF" xlink:to="loc_us-gaap_SegmentDomain_D1A346E94A3802CC87B9C50B2EEF1529" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_MineralResourcesMember" xlink:label="loc_trc_MineralResourcesMember_F0AE9CCEA6F843DA0EF0C50B2EEF6FFB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_D1A346E94A3802CC87B9C50B2EEF1529" xlink:to="loc_trc_MineralResourcesMember_F0AE9CCEA6F843DA0EF0C50B2EEF6FFB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_C26B918B80002DCD5535C50B2EFF947F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_16B0D8F56354C5320F56C50B2EFF396F" xlink:to="loc_us-gaap_Revenues_C26B918B80002DCD5535C50B2EFF947F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostsAndExpenses" xlink:label="loc_us-gaap_CostsAndExpenses_A411D089AD9EA831696FC50B2EFFAD90" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_16B0D8F56354C5320F56C50B2EFF396F" xlink:to="loc_us-gaap_CostsAndExpenses_A411D089AD9EA831696FC50B2EFFAD90" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_07C5BF14A9FA2803460DC50B2EFF6932" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_16B0D8F56354C5320F56C50B2EFF396F" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_07C5BF14A9FA2803460DC50B2EFF6932" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/ReportingSegmentsAndRelatedInformationRevenueComponentsOfRanchOperationsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems" xlink:label="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_50BF9D5840E51D38F537C50B2EEF7341" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable" xlink:label="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_7639AF8E3044A573EFAFC50B2EEFDB13" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_50BF9D5840E51D38F537C50B2EEF7341" xlink:to="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_7639AF8E3044A573EFAFC50B2EEFDB13" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_3C7C40B576FC5ABF162CC50B2EEF54AD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_7639AF8E3044A573EFAFC50B2EEFDB13" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_3C7C40B576FC5ABF162CC50B2EEF54AD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_DB2BE008BB92085455C6C50B2EEFC077_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_3C7C40B576FC5ABF162CC50B2EEF54AD" xlink:to="loc_us-gaap_SegmentDomain_DB2BE008BB92085455C6C50B2EEFC077_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_DB2BE008BB92085455C6C50B2EEFC077" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_3C7C40B576FC5ABF162CC50B2EEF54AD" xlink:to="loc_us-gaap_SegmentDomain_DB2BE008BB92085455C6C50B2EEFC077" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_RanchOperationsMember" xlink:label="loc_trc_RanchOperationsMember_124112E06089ED4FFCCCC50B2EEFC6E3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_DB2BE008BB92085455C6C50B2EEFC077" xlink:to="loc_trc_RanchOperationsMember_124112E06089ED4FFCCCC50B2EEFC6E3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_11F2E9EECD268270B461C50B2EEFAF04" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_50BF9D5840E51D38F537C50B2EEF7341" xlink:to="loc_us-gaap_Revenues_11F2E9EECD268270B461C50B2EEFAF04" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostsAndExpenses" xlink:label="loc_us-gaap_CostsAndExpenses_ACFD9906894921C3A43EC50B2EEF3738" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_50BF9D5840E51D38F537C50B2EEF7341" xlink:to="loc_us-gaap_CostsAndExpenses_ACFD9906894921C3A43EC50B2EEF3738" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_C92F953D8925532D5350C50B2EEF7706" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_50BF9D5840E51D38F537C50B2EEF7341" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_C92F953D8925532D5350C50B2EEF7706" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/ReportingSegmentsAndRelatedInformationRevenueComponentsOfRealEstateSegmentsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems" xlink:label="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_56301AA04A03E767DFB4C50B2EFFEF24" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable" xlink:label="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_D85CFA9EF695A33094A7C50B2EFF8597" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_56301AA04A03E767DFB4C50B2EFFEF24" xlink:to="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_D85CFA9EF695A33094A7C50B2EFF8597" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_D60E87CDCD3A76A3BD9EC50B2EFF7D0D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_D85CFA9EF695A33094A7C50B2EFF8597" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_D60E87CDCD3A76A3BD9EC50B2EFF7D0D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_E798BF7062085329B1A4C50B2EFF4A1A_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_D60E87CDCD3A76A3BD9EC50B2EFF7D0D" xlink:to="loc_us-gaap_SegmentDomain_E798BF7062085329B1A4C50B2EFF4A1A_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_E798BF7062085329B1A4C50B2EFF4A1A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_D60E87CDCD3A76A3BD9EC50B2EFF7D0D" xlink:to="loc_us-gaap_SegmentDomain_E798BF7062085329B1A4C50B2EFF4A1A" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_CommercialAndIndustrialMember" xlink:label="loc_trc_CommercialAndIndustrialMember_5B1FF728F23FA4952ECEC50B2EFF509B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_E798BF7062085329B1A4C50B2EFF4A1A" xlink:to="loc_trc_CommercialAndIndustrialMember_5B1FF728F23FA4952ECEC50B2EFF509B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ResidentialRealEstateMember" xlink:label="loc_us-gaap_ResidentialRealEstateMember_8E60AEEDD085E50A0EA9C50B2EFFCED0" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_E798BF7062085329B1A4C50B2EFF4A1A" xlink:to="loc_us-gaap_ResidentialRealEstateMember_8E60AEEDD085E50A0EA9C50B2EFFCED0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_AF54D6A3EA6FFDDC7017C50B2EFFF480" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_56301AA04A03E767DFB4C50B2EFFEF24" xlink:to="loc_us-gaap_Revenues_AF54D6A3EA6FFDDC7017C50B2EFFF480" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_DEEA59C2DCF3A2FF5FE2C50B2EFF80BA" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_56301AA04A03E767DFB4C50B2EFFEF24" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_DEEA59C2DCF3A2FF5FE2C50B2EFF80BA" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_RevenuesandIncomeLossfromEquityMethodInvestments" xlink:label="loc_trc_RevenuesandIncomeLossfromEquityMethodInvestments_CE9C318BF1E9BFCAB3F1C50B2EFF0598" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_56301AA04A03E767DFB4C50B2EFFEF24" xlink:to="loc_trc_RevenuesandIncomeLossfromEquityMethodInvestments_CE9C318BF1E9BFCAB3F1C50B2EFF0598" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostsAndExpenses" xlink:label="loc_us-gaap_CostsAndExpenses_D0BC41103A0060EAAF86C50B2EFF36D8" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_56301AA04A03E767DFB4C50B2EFFEF24" xlink:to="loc_us-gaap_CostsAndExpenses_D0BC41103A0060EAAF86C50B2EFF36D8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_55007BA440F322F12017C50B2EFFE815" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_56301AA04A03E767DFB4C50B2EFFEF24" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_55007BA440F322F12017C50B2EFFE815" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/ReportingSegmentsAndRelatedInformationTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/RetirementPlans" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/RetirementPlansAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_8071274B6FB68D2D3E4CC50B2F5C9104" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_73D2694650944843DB6AC50B2F5AEC86" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_8071274B6FB68D2D3E4CC50B2F5C9104" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_73D2694650944843DB6AC50B2F5AEC86" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_02D39240747F445C4240C50B2F5AA736" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_73D2694650944843DB6AC50B2F5AEC86" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_02D39240747F445C4240C50B2F5AA736" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_2D2C5F76FF6AD1C2C576C50B2F5A62B7_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_02D39240747F445C4240C50B2F5AA736" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_2D2C5F76FF6AD1C2C576C50B2F5A62B7_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_2D2C5F76FF6AD1C2C576C50B2F5A62B7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_02D39240747F445C4240C50B2F5AA736" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_2D2C5F76FF6AD1C2C576C50B2F5A62B7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_A96414D829194B456386C50B2F5B6493" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_2D2C5F76FF6AD1C2C576C50B2F5A62B7" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_A96414D829194B456386C50B2F5B6493" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember" xlink:label="loc_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_48E03D297A6448FB3D7AC50B2F5BEACD" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_2D2C5F76FF6AD1C2C576C50B2F5A62B7" xlink:to="loc_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_48E03D297A6448FB3D7AC50B2F5BEACD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_B4D1A857512B8101CF74C50B2F5B3400" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_73D2694650944843DB6AC50B2F5AEC86" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_B4D1A857512B8101CF74C50B2F5B3400" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_40E3568E9F76283A76B7C50B2F5B3046_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_B4D1A857512B8101CF74C50B2F5B3400" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_40E3568E9F76283A76B7C50B2F5B3046_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_40E3568E9F76283A76B7C50B2F5B3046" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_B4D1A857512B8101CF74C50B2F5B3400" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_40E3568E9F76283A76B7C50B2F5B3046" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesMember" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_1BBED9CF465BE465E17FC50B2F5C0BF5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_40E3568E9F76283A76B7C50B2F5B3046" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_1BBED9CF465BE465E17FC50B2F5C0BF5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanDebtSecurityMember" xlink:label="loc_us-gaap_DefinedBenefitPlanDebtSecurityMember_109E4121F96D8EDDA68DC50B2F5C7B34" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_40E3568E9F76283A76B7C50B2F5B3046" xlink:to="loc_us-gaap_DefinedBenefitPlanDebtSecurityMember_109E4121F96D8EDDA68DC50B2F5C7B34" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MoneyMarketFundsMember" xlink:label="loc_us-gaap_MoneyMarketFundsMember_C38D18197A67E5F6ECB7C50B2F5C6721" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_40E3568E9F76283A76B7C50B2F5B3046" xlink:to="loc_us-gaap_MoneyMarketFundsMember_C38D18197A67E5F6ECB7C50B2F5C6721" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_DefinedBenefitPlanAverageServicePeriod" xlink:label="loc_trc_DefinedBenefitPlanAverageServicePeriod_92C619777D5E5C7D7941C50B2F5C0855" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_8071274B6FB68D2D3E4CC50B2F5C9104" xlink:to="loc_trc_DefinedBenefitPlanAverageServicePeriod_92C619777D5E5C7D7941C50B2F5C0855" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax_5ACB36D7825C91920605C50B2F5D7816" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_8071274B6FB68D2D3E4CC50B2F5C9104" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax_5ACB36D7825C91920605C50B2F5D7816" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear_4B9C2695D0D1AD835B76C50B2F5DE53D" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_8071274B6FB68D2D3E4CC50B2F5C9104" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear_4B9C2695D0D1AD835B76C50B2F5DE53D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAssetsTargetAllocationsAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanAssetsTargetAllocationsAbstract_116C16D25F8EF869D406C50B2F5D078E" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_8071274B6FB68D2D3E4CC50B2F5C9104" xlink:to="loc_us-gaap_DefinedBenefitPlanAssetsTargetAllocationsAbstract_116C16D25F8EF869D406C50B2F5D078E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations" xlink:label="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations_EA614AC5D0A65093D0B3C50B2F5D0AA5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAssetsTargetAllocationsAbstract_116C16D25F8EF869D406C50B2F5D078E" xlink:to="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations_EA614AC5D0A65093D0B3C50B2F5D0AA5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_794B4EB83D4182CFDFF1C50B2F5DEA5D" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_8071274B6FB68D2D3E4CC50B2F5C9104" xlink:to="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_794B4EB83D4182CFDFF1C50B2F5DEA5D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_5F0D099FA3440AFC8217C50B2F5D1E34" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_794B4EB83D4182CFDFF1C50B2F5DEA5D" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_5F0D099FA3440AFC8217C50B2F5D1E34" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_9C1A51417D1E5912A83FC50B2F5E84B3" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_794B4EB83D4182CFDFF1C50B2F5DEA5D" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_9C1A51417D1E5912A83FC50B2F5E84B3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_AFBED2128CF336A0E097C50B2F5E886D" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_8071274B6FB68D2D3E4CC50B2F5C9104" xlink:to="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_AFBED2128CF336A0E097C50B2F5E886D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_F064C1EAC16BCC54C4BCC50B2F5E4C78" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_AFBED2128CF336A0E097C50B2F5E886D" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_F064C1EAC16BCC54C4BCC50B2F5E4C78" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease_B193BD2DC687B2515D77C50B2F5E0337" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_AFBED2128CF336A0E097C50B2F5E886D" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease_B193BD2DC687B2515D77C50B2F5E0337" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/RetirementPlansAmountsExpectedToBeRecognizedAsComponentsOfNetPeriodicPensionCostsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_9354B4C7BB606AEE049BC50B2F7BAB32" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_DE79F49983805E3A31B6C50B2F7A9C9F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_9354B4C7BB606AEE049BC50B2F7BAB32" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_DE79F49983805E3A31B6C50B2F7A9C9F" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_2568F167CB8BD82849DDC50B2F7A2FA9" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_DE79F49983805E3A31B6C50B2F7A9C9F" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_2568F167CB8BD82849DDC50B2F7A2FA9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_6B7D86A5B022221BA140C50B2F7ACFF0_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_2568F167CB8BD82849DDC50B2F7A2FA9" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_6B7D86A5B022221BA140C50B2F7ACFF0_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_6B7D86A5B022221BA140C50B2F7ACFF0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_2568F167CB8BD82849DDC50B2F7A2FA9" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_6B7D86A5B022221BA140C50B2F7ACFF0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_02ECF93280987A2699A1C50B2F7B3C8C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_6B7D86A5B022221BA140C50B2F7ACFF0" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_02ECF93280987A2699A1C50B2F7B3C8C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember" xlink:label="loc_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_903B7313947CF4A8A717C50B2F7BED0E" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_6B7D86A5B022221BA140C50B2F7ACFF0" xlink:to="loc_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_903B7313947CF4A8A717C50B2F7BED0E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_A48F21958AC9FA25685CC50B2F7B315B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_9354B4C7BB606AEE049BC50B2F7BAB32" xlink:to="loc_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_A48F21958AC9FA25685CC50B2F7B315B" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_DefinedBenefitPlanExpectedReturnonPlanAssetsNextFiscalYear" xlink:label="loc_trc_DefinedBenefitPlanExpectedReturnonPlanAssetsNextFiscalYear_FB71E546A16EAFC192AEC50B2F7B7520" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_A48F21958AC9FA25685CC50B2F7B315B" xlink:to="loc_trc_DefinedBenefitPlanExpectedReturnonPlanAssetsNextFiscalYear_FB71E546A16EAFC192AEC50B2F7B7520" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_DefinedBenefitPlanExpectedInterestCostNextFiscalYear" xlink:label="loc_trc_DefinedBenefitPlanExpectedInterestCostNextFiscalYear_248B042DA986D391C73AC50B2F7C9B4A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_A48F21958AC9FA25685CC50B2F7B315B" xlink:to="loc_trc_DefinedBenefitPlanExpectedInterestCostNextFiscalYear_248B042DA986D391C73AC50B2F7C9B4A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear_9739EDCBAA6E101F8893C50B2F7C240C" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_A48F21958AC9FA25685CC50B2F7B315B" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear_9739EDCBAA6E101F8893C50B2F7C240C" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_DefinedBenefitPlanExpectedNetPeriodBenefitCostCreditNextFiscalYear" xlink:label="loc_trc_DefinedBenefitPlanExpectedNetPeriodBenefitCostCreditNextFiscalYear_1CBFCDE26172898147C5C50B2F7C4D25" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYearAbstract_A48F21958AC9FA25685CC50B2F7B315B" xlink:to="loc_trc_DefinedBenefitPlanExpectedNetPeriodBenefitCostCreditNextFiscalYear_1CBFCDE26172898147C5C50B2F7C4D25" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/RetirementPlansChangeInBenefitObligationsAndPlanAssetsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_4645F71414DAA641653AC50B2F8C93BC" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_B3E5E0E4FFCA4326188DC50B2F8A4CBC" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_4645F71414DAA641653AC50B2F8C93BC" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_B3E5E0E4FFCA4326188DC50B2F8A4CBC" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_6F3ED90B3E4C84542A03C50B2F8BEC8A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_B3E5E0E4FFCA4326188DC50B2F8A4CBC" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_6F3ED90B3E4C84542A03C50B2F8BEC8A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_147091B0B98B7E48291FC50B2F8B3C55_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_6F3ED90B3E4C84542A03C50B2F8BEC8A" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_147091B0B98B7E48291FC50B2F8B3C55_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_147091B0B98B7E48291FC50B2F8B3C55" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_6F3ED90B3E4C84542A03C50B2F8BEC8A" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_147091B0B98B7E48291FC50B2F8B3C55" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_F276184C6C2535E5E6C7C50B2F8B0D20" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_147091B0B98B7E48291FC50B2F8B3C55" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_F276184C6C2535E5E6C7C50B2F8B0D20" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember" xlink:label="loc_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_3131ABE10F4B15CDC02BC50B2F8C5691" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_147091B0B98B7E48291FC50B2F8B3C55" xlink:to="loc_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_3131ABE10F4B15CDC02BC50B2F8C5691" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract_3C2B9EB235F8C34126DDC50B2F8C9751" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_4645F71414DAA641653AC50B2F8C93BC" xlink:to="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract_3C2B9EB235F8C34126DDC50B2F8C9751" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_C7926E4ED47829CAF470C50B2F8CE117" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract_3C2B9EB235F8C34126DDC50B2F8C9751" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_C7926E4ED47829CAF470C50B2F8CE117" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligation" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_9733073C7FD3B3199724C50B2F8C285C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_C7926E4ED47829CAF470C50B2F8CE117" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligation_9733073C7FD3B3199724C50B2F8C285C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_EF52A639027B5BA1CDE6C50B2F8D57C3" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_C7926E4ED47829CAF470C50B2F8CE117" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_EF52A639027B5BA1CDE6C50B2F8D57C3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_CD96D88629D6CFE6B512C50B2F8D1725" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_C7926E4ED47829CAF470C50B2F8CE117" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_CD96D88629D6CFE6B512C50B2F8D1725" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_DefinedBenefitPlanActuarialGainLossAndOtherChanges" xlink:label="loc_trc_DefinedBenefitPlanActuarialGainLossAndOtherChanges_D6355D55C398BED91DAAC50B2F8DD7A7" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_C7926E4ED47829CAF470C50B2F8CE117" xlink:to="loc_trc_DefinedBenefitPlanActuarialGainLossAndOtherChanges_D6355D55C398BED91DAAC50B2F8DD7A7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_1033C67E885CE8A37016C50B2F8DE032" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_C7926E4ED47829CAF470C50B2F8CE117" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_1033C67E885CE8A37016C50B2F8DE032" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanCurtailments" xlink:label="loc_us-gaap_DefinedBenefitPlanCurtailments_C0D49AE10BB4D88D980DC50B2F8DEC98" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_C7926E4ED47829CAF470C50B2F8CE117" xlink:to="loc_us-gaap_DefinedBenefitPlanCurtailments_C0D49AE10BB4D88D980DC50B2F8DEC98" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligationPaymentForSettlement" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligationPaymentForSettlement_9696A961FC4F6CA38DFFC50B2F8EF4FB" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_C7926E4ED47829CAF470C50B2F8CE117" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligationPaymentForSettlement_9696A961FC4F6CA38DFFC50B2F8EF4FB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_F0A642766A92BA765200C50B2F8EE026" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract_3C2B9EB235F8C34126DDC50B2F8C9751" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_F0A642766A92BA765200C50B2F8EE026" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_0E284891FE12813BD94DC50B2F8E867B" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract_3C2B9EB235F8C34126DDC50B2F8C9751" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_0E284891FE12813BD94DC50B2F8E867B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_577F4EF2B8AF1C3485C9C50B2F8EDB58" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_0E284891FE12813BD94DC50B2F8E867B" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_577F4EF2B8AF1C3485C9C50B2F8EDB58" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_D60B487AFC3D73C75243C50B2F8F408E" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_0E284891FE12813BD94DC50B2F8E867B" xlink:to="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_D60B487AFC3D73C75243C50B2F8F408E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer" xlink:label="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_5272BD7691FB2AEE5F40C50B2F8FEAE2" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_0E284891FE12813BD94DC50B2F8E867B" xlink:to="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_5272BD7691FB2AEE5F40C50B2F8FEAE2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_C68649F2AC60989EEED0C50B2F8FBCC4" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_0E284891FE12813BD94DC50B2F8E867B" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_C68649F2AC60989EEED0C50B2F8FBCC4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanFundedStatusOfPlan" xlink:label="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_E3350A0EF22CCC9C1618C50B2F8F8AA7" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract_3C2B9EB235F8C34126DDC50B2F8C9751" xlink:to="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_E3350A0EF22CCC9C1618C50B2F8F8AA7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_506FA09BE2759A455117C50B2F8F1C67" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_4645F71414DAA641653AC50B2F8C93BC" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_506FA09BE2759A455117C50B2F8F1C67" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_A3127EB302504895562FC50B2F90CD31" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_506FA09BE2759A455117C50B2F8F1C67" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_A3127EB302504895562FC50B2F90CD31" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax_8B2E0AD9E231DD3538B9C50B2F90213D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_506FA09BE2759A455117C50B2F8F1C67" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax_8B2E0AD9E231DD3538B9C50B2F90213D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_1BE64C36C06747DB0C94C50B2F90591B" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_4645F71414DAA641653AC50B2F8C93BC" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_1BE64C36C06747DB0C94C50B2F90591B" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/RetirementPlansChangesInPlanAssetsAndBenefitObligationsRecognizedInOtherComprehensiveIncomeDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_D760F6DE1D0F8AC2A47DC50B2F814762" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_CF85D88D0EE06045D301C50B2F80EBB5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_D760F6DE1D0F8AC2A47DC50B2F814762" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_CF85D88D0EE06045D301C50B2F80EBB5" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_8AE13784B2FD8B0441ECC50B2F811A91" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_CF85D88D0EE06045D301C50B2F80EBB5" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_8AE13784B2FD8B0441ECC50B2F811A91" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_3EEFE4FCFE96B8A0DAA8C50B2F81372C_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_8AE13784B2FD8B0441ECC50B2F811A91" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_3EEFE4FCFE96B8A0DAA8C50B2F81372C_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_3EEFE4FCFE96B8A0DAA8C50B2F81372C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_8AE13784B2FD8B0441ECC50B2F811A91" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_3EEFE4FCFE96B8A0DAA8C50B2F81372C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_B89D78A15A2290CDD0FFC50B2F81297B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_3EEFE4FCFE96B8A0DAA8C50B2F81372C" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_B89D78A15A2290CDD0FFC50B2F81297B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember" xlink:label="loc_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_ACD55190B9559F24D557C50B2F818B40" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_3EEFE4FCFE96B8A0DAA8C50B2F81372C" xlink:to="loc_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_ACD55190B9559F24D557C50B2F818B40" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstract_ADC8120FB76143BCDCC4C50B2F829492" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_D760F6DE1D0F8AC2A47DC50B2F814762" xlink:to="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstract_ADC8120FB76143BCDCC4C50B2F829492" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax_C23F8421F5CA21BC8999C50B2F82D194" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstract_ADC8120FB76143BCDCC4C50B2F829492" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax_C23F8421F5CA21BC8999C50B2F82D194" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax_67604BC7059E930098DAC50B2F825847" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstract_ADC8120FB76143BCDCC4C50B2F829492" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax_67604BC7059E930098DAC50B2F825847" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax_D6ADDFB7B04C7EF7A8B2C50B2F8258C4" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstract_ADC8120FB76143BCDCC4C50B2F829492" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax_D6ADDFB7B04C7EF7A8B2C50B2F8258C4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_BAF315A401255ED285ABC50B2F832EE9" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstract_ADC8120FB76143BCDCC4C50B2F829492" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_BAF315A401255ED285ABC50B2F832EE9" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/RetirementPlansExpectedAnnualBenefitPaymentsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_082CBE3624993261657AC50B2F735782" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_37355FC7BE0699E0611CC50B2F72730A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_082CBE3624993261657AC50B2F735782" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_37355FC7BE0699E0611CC50B2F72730A" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_A9203CDA596C351D73BAC50B2F72BD6D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_37355FC7BE0699E0611CC50B2F72730A" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_A9203CDA596C351D73BAC50B2F72BD6D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_3426F23395DC86799A08C50B2F72573B_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_A9203CDA596C351D73BAC50B2F72BD6D" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_3426F23395DC86799A08C50B2F72573B_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_3426F23395DC86799A08C50B2F72573B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_A9203CDA596C351D73BAC50B2F72BD6D" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_3426F23395DC86799A08C50B2F72573B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_FF8A7F44C17091E6C4AEC50B2F731FA6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_3426F23395DC86799A08C50B2F72573B" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_FF8A7F44C17091E6C4AEC50B2F731FA6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember" xlink:label="loc_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_21511B6F38D703B45BA6C50B2F7389FE" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_3426F23395DC86799A08C50B2F72573B" xlink:to="loc_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_21511B6F38D703B45BA6C50B2F7389FE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_6C86B0D3DA0B50D68A49C50B2F7377B2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_082CBE3624993261657AC50B2F735782" xlink:to="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_6C86B0D3DA0B50D68A49C50B2F7377B2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_CB054274EB29C8C85141C50B2F748DB3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_6C86B0D3DA0B50D68A49C50B2F7377B2" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_CB054274EB29C8C85141C50B2F748DB3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_4F3F2BACFBD7BBE41D81C50B2F74812A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_6C86B0D3DA0B50D68A49C50B2F7377B2" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_4F3F2BACFBD7BBE41D81C50B2F74812A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_BDF9EFB4624B6F5F3AA2C50B2F749074" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_6C86B0D3DA0B50D68A49C50B2F7377B2" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_BDF9EFB4624B6F5F3AA2C50B2F749074" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_3F0A2D6A71A0A29CF427C50B2F749E16" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_6C86B0D3DA0B50D68A49C50B2F7377B2" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_3F0A2D6A71A0A29CF427C50B2F749E16" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_61A05AF7C901548EC8DDC50B2F74C6BB" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_6C86B0D3DA0B50D68A49C50B2F7377B2" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_61A05AF7C901548EC8DDC50B2F74C6BB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_153A4A138483B53A686AC50B2F752F0E" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_6C86B0D3DA0B50D68A49C50B2F7377B2" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_153A4A138483B53A686AC50B2F752F0E" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/RetirementPlansFairValueOfPlanAssetsByInvestmentTypeDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_C10DC9C15BF947557C01C50B2F6E78C4" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_DC8BC678DC2412DC40A2C50B2F6B13BB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_C10DC9C15BF947557C01C50B2F6E78C4" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_DC8BC678DC2412DC40A2C50B2F6B13BB" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_43AE6B1DAF3D1B8B44AEC50B2F6B79A1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_DC8BC678DC2412DC40A2C50B2F6B13BB" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_43AE6B1DAF3D1B8B44AEC50B2F6B79A1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_47553B225569C45418B0C50B2F6CC338_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_43AE6B1DAF3D1B8B44AEC50B2F6B79A1" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_47553B225569C45418B0C50B2F6CC338_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_47553B225569C45418B0C50B2F6CC338" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_43AE6B1DAF3D1B8B44AEC50B2F6B79A1" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_47553B225569C45418B0C50B2F6CC338" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_3E80F171F99B0A7FFC9AC50B2F6CCCE2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_47553B225569C45418B0C50B2F6CC338" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_3E80F171F99B0A7FFC9AC50B2F6CCCE2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_5DA002C5F9A3977FE568C50B2F6CFFB0" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_DC8BC678DC2412DC40A2C50B2F6B13BB" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_5DA002C5F9A3977FE568C50B2F6CFFB0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_B46D63B8737952882E9FC50B2F6C7D1A_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_5DA002C5F9A3977FE568C50B2F6CFFB0" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_B46D63B8737952882E9FC50B2F6C7D1A_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_B46D63B8737952882E9FC50B2F6C7D1A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_5DA002C5F9A3977FE568C50B2F6CFFB0" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_B46D63B8737952882E9FC50B2F6C7D1A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember" xlink:label="loc_us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember_08C7FA2D022E47A20612C50B2F6CDD82" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_B46D63B8737952882E9FC50B2F6C7D1A" xlink:to="loc_us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember_08C7FA2D022E47A20612C50B2F6CDD82" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityFundsMember" xlink:label="loc_us-gaap_EquityFundsMember_6CF98320737F5D01F39AC50B2F6D9B18" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_B46D63B8737952882E9FC50B2F6C7D1A" xlink:to="loc_us-gaap_EquityFundsMember_6CF98320737F5D01F39AC50B2F6D9B18" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_E4E7FB7458ADD3BE9D03C50B2F6D794B" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_DC8BC678DC2412DC40A2C50B2F6B13BB" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_E4E7FB7458ADD3BE9D03C50B2F6D794B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8177B6839229F5A970DCC50B2F6D8207_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_E4E7FB7458ADD3BE9D03C50B2F6D794B" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8177B6839229F5A970DCC50B2F6D8207_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8177B6839229F5A970DCC50B2F6D8207" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_E4E7FB7458ADD3BE9D03C50B2F6D794B" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8177B6839229F5A970DCC50B2F6D8207" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_814C30F8C7825762E243C50B2F6D3420" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8177B6839229F5A970DCC50B2F6D8207" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_814C30F8C7825762E243C50B2F6D3420" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_5E87151B8B58525287B9C50B2F6E2EAE" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8177B6839229F5A970DCC50B2F6D8207" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_5E87151B8B58525287B9C50B2F6E2EAE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_E34D3734E461681659A3C50B2F6E9E01" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_C10DC9C15BF947557C01C50B2F6E78C4" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_E34D3734E461681659A3C50B2F6E9E01" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/RetirementPlansNetPeriodicPensionCostPensionPlanDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_FF0CA345F7091AA6E507C50B2F657790" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_1A74E78B18869F63515CC50B2F64CC31" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_FF0CA345F7091AA6E507C50B2F657790" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_1A74E78B18869F63515CC50B2F64CC31" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_720646EF78F4CE862C1AC50B2F657857" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_1A74E78B18869F63515CC50B2F64CC31" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_720646EF78F4CE862C1AC50B2F657857" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_7D0D9455A8287DBC8CE0C50B2F654EB3_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_720646EF78F4CE862C1AC50B2F657857" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_7D0D9455A8287DBC8CE0C50B2F654EB3_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_7D0D9455A8287DBC8CE0C50B2F654EB3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_720646EF78F4CE862C1AC50B2F657857" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_7D0D9455A8287DBC8CE0C50B2F654EB3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_52E78E87400486FD94C1C50B2F65F904" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_7D0D9455A8287DBC8CE0C50B2F654EB3" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_52E78E87400486FD94C1C50B2F65F904" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_471830AE03C44992C05AC50B2F66BF61" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_FF0CA345F7091AA6E507C50B2F657790" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_471830AE03C44992C05AC50B2F66BF61" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_8514BBA63F387586A9C7C50B2F665A03" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_471830AE03C44992C05AC50B2F66BF61" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_8514BBA63F387586A9C7C50B2F665A03" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_2567707E12E0034D3159C50B2F6670B8" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_471830AE03C44992C05AC50B2F66BF61" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_2567707E12E0034D3159C50B2F6670B8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_D94EB1634682E56F97A8C50B2F669194" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_471830AE03C44992C05AC50B2F66BF61" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_D94EB1634682E56F97A8C50B2F669194" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_55D1B259016480074F41C50B2F677126" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_471830AE03C44992C05AC50B2F66BF61" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_55D1B259016480074F41C50B2F677126" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1" xlink:label="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_DB94DDE18EC1B29F78A1C50B2F67AE67" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_471830AE03C44992C05AC50B2F66BF61" xlink:to="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_DB94DDE18EC1B29F78A1C50B2F67AE67" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_CDBB4971BBD8482401A4C50B2F679ADD" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_471830AE03C44992C05AC50B2F66BF61" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_CDBB4971BBD8482401A4C50B2F679ADD" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/RetirementPlansRetirementPlansNetPeriodicPensionCostSerpDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_182E4A0F56FFC384644FC50B2F553870" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_93B670B869F297F622D5C50B2F53188B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_182E4A0F56FFC384644FC50B2F553870" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_93B670B869F297F622D5C50B2F53188B" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_5165C398ABFE4680F186C50B2F54A006" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_93B670B869F297F622D5C50B2F53188B" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_5165C398ABFE4680F186C50B2F54A006" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_081C8F97B3D2675A7DDEC50B2F541BD3_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_5165C398ABFE4680F186C50B2F54A006" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_081C8F97B3D2675A7DDEC50B2F541BD3_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_081C8F97B3D2675A7DDEC50B2F541BD3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_5165C398ABFE4680F186C50B2F54A006" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_081C8F97B3D2675A7DDEC50B2F541BD3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember" xlink:label="loc_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_DD3246F9652C82B7B30BC50B2F54CC47" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_081C8F97B3D2675A7DDEC50B2F541BD3" xlink:to="loc_us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_DD3246F9652C82B7B30BC50B2F54CC47" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_F2795A05481799EEA3C0C50B2F55BF77" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_182E4A0F56FFC384644FC50B2F553870" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_F2795A05481799EEA3C0C50B2F55BF77" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_2D05861A480F2F000601C50B2F5538E7" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_182E4A0F56FFC384644FC50B2F553870" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_2D05861A480F2F000601C50B2F5538E7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_AAF59343796CDB978B3EC50B2F55DDDF" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_182E4A0F56FFC384644FC50B2F553870" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_AAF59343796CDB978B3EC50B2F55DDDF" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/RetirementPlansTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/StockCompensationRestrictedStockAndPerformanceShareGrants" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/StockCompensationRestrictedStockAndPerformanceShareGrantsAdditionalInformationDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/StockCompensationRestrictedStockAndPerformanceShareGrantsCompensationCostsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_122A2FCF3D3F5C322E8FC50B2FFCB1C0" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_C3CF1267DAEF925BD303C50B2FFA9622" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_122A2FCF3D3F5C322E8FC50B2FFCB1C0" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_C3CF1267DAEF925BD303C50B2FFA9622" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_EA04AEB2F8467AA82E4FC50B2FFBE422" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_C3CF1267DAEF925BD303C50B2FFA9622" xlink:to="loc_us-gaap_PlanNameAxis_EA04AEB2F8467AA82E4FC50B2FFBE422" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_188DA32F553E2A7D5496C50B2FFB1562_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_EA04AEB2F8467AA82E4FC50B2FFBE422" xlink:to="loc_us-gaap_PlanNameDomain_188DA32F553E2A7D5496C50B2FFB1562_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_188DA32F553E2A7D5496C50B2FFB1562" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_EA04AEB2F8467AA82E4FC50B2FFBE422" xlink:to="loc_us-gaap_PlanNameDomain_188DA32F553E2A7D5496C50B2FFB1562" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_StockIncentivePlan1998Member" xlink:label="loc_trc_StockIncentivePlan1998Member_0CF901909BC0D61428FDC50B2FFBA27C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_188DA32F553E2A7D5496C50B2FFB1562" xlink:to="loc_trc_StockIncentivePlan1998Member_0CF901909BC0D61428FDC50B2FFBA27C" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_NonEmployeeDirectorStockIncentivePlanMember" xlink:label="loc_trc_NonEmployeeDirectorStockIncentivePlanMember_877E3A48E832A3B05EEEC50B2FFCD4F1" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_188DA32F553E2A7D5496C50B2FFB1562" xlink:to="loc_trc_NonEmployeeDirectorStockIncentivePlanMember_877E3A48E832A3B05EEEC50B2FFCD4F1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_3C128D5A105D73BAC1AEC50B2FFC4814" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_122A2FCF3D3F5C322E8FC50B2FFCB1C0" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_3C128D5A105D73BAC1AEC50B2FFC4814" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount_9FF5560620715C86550DC50B2FFC4F74" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_122A2FCF3D3F5C322E8FC50B2FFCB1C0" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount_9FF5560620715C86550DC50B2FFC4F74" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_ShareBasedCompensationArrangementByShareBasedPaymentAwardCompensationCosts" xlink:label="loc_trc_ShareBasedCompensationArrangementByShareBasedPaymentAwardCompensationCosts_5C4AEF7F7F0828274F10C50B2FFD5C93" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_122A2FCF3D3F5C322E8FC50B2FFCB1C0" xlink:to="loc_trc_ShareBasedCompensationArrangementByShareBasedPaymentAwardCompensationCosts_5C4AEF7F7F0828274F10C50B2FFD5C93" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/StockCompensationRestrictedStockAndPerformanceShareGrantsPerformanceShareGrantsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_A50AF1C3C19964F23F62C50B300EA50A" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_1EF7451E7F989091D668C50B300DC313" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_A50AF1C3C19964F23F62C50B300EA50A" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_1EF7451E7F989091D668C50B300DC313" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_41D90DE838F2BE5DFB88C50B300D13F0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_1EF7451E7F989091D668C50B300DC313" xlink:to="loc_us-gaap_AwardTypeAxis_41D90DE838F2BE5DFB88C50B300D13F0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_EF9740BB58879FA16F28C50B300D161A_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_41D90DE838F2BE5DFB88C50B300D13F0" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_EF9740BB58879FA16F28C50B300D161A_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_EF9740BB58879FA16F28C50B300D161A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_41D90DE838F2BE5DFB88C50B300D13F0" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_EF9740BB58879FA16F28C50B300D161A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="loc_us-gaap_PerformanceSharesMember_381A336B36F6C2EDDB14C50B300E2362" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_EF9740BB58879FA16F28C50B300D161A" xlink:to="loc_us-gaap_PerformanceSharesMember_381A336B36F6C2EDDB14C50B300E2362" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_PerformanceAwardsGrantedWithPerformanceConditionsNumberOfSharesToBeIssuedBelowThresholdPerformance" xlink:label="loc_trc_PerformanceAwardsGrantedWithPerformanceConditionsNumberOfSharesToBeIssuedBelowThresholdPerformance_3974811E64FBACBB3A05C50B300E0353" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_A50AF1C3C19964F23F62C50B300EA50A" xlink:to="loc_trc_PerformanceAwardsGrantedWithPerformanceConditionsNumberOfSharesToBeIssuedBelowThresholdPerformance_3974811E64FBACBB3A05C50B300E0353" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_PerformanceAwardsGrantedwithPerformanceConditionsMinimumNumberofSharestobeIssuedatThresholdPerformance" xlink:label="loc_trc_PerformanceAwardsGrantedwithPerformanceConditionsMinimumNumberofSharestobeIssuedatThresholdPerformance_DDCB7165D4494BEDEF5EC50B300E44FD" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_A50AF1C3C19964F23F62C50B300EA50A" xlink:to="loc_trc_PerformanceAwardsGrantedwithPerformanceConditionsMinimumNumberofSharestobeIssuedatThresholdPerformance_DDCB7165D4494BEDEF5EC50B300E44FD" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_PerformanceAwardsGrantedwithPerformanceConditionsNumberofSharestobeIssuedatTargetPerformance" xlink:label="loc_trc_PerformanceAwardsGrantedwithPerformanceConditionsNumberofSharestobeIssuedatTargetPerformance_F8F27B6EE4884281C206C50B300F90D2" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_A50AF1C3C19964F23F62C50B300EA50A" xlink:to="loc_trc_PerformanceAwardsGrantedwithPerformanceConditionsNumberofSharestobeIssuedatTargetPerformance_F8F27B6EE4884281C206C50B300F90D2" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_PerformanceAwardsGrantedwithPerformanceConditionsMaximumNumberofSharestobeIssuedatMaximumPerformance" xlink:label="loc_trc_PerformanceAwardsGrantedwithPerformanceConditionsMaximumNumberofSharestobeIssuedatMaximumPerformance_792C855B03922FD97B6AC50B300FE2B5" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_A50AF1C3C19964F23F62C50B300EA50A" xlink:to="loc_trc_PerformanceAwardsGrantedwithPerformanceConditionsMaximumNumberofSharestobeIssuedatMaximumPerformance_792C855B03922FD97B6AC50B300FE2B5" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/StockCompensationRestrictedStockAndPerformanceShareGrantsStockGrantActivityDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2FEEE3249E651AB78EBEC50B3004AE74" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_B3A4DC7B745928E8B726C50B3002D348" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2FEEE3249E651AB78EBEC50B3004AE74" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_B3A4DC7B745928E8B726C50B3002D348" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_95FBF61CE369D318D854C50B3002C173" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_B3A4DC7B745928E8B726C50B3002D348" xlink:to="loc_us-gaap_AwardTypeAxis_95FBF61CE369D318D854C50B3002C173" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_210957A71A9A9C6F0766C50B3002F49F_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_95FBF61CE369D318D854C50B3002C173" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_210957A71A9A9C6F0766C50B3002F49F_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_210957A71A9A9C6F0766C50B3002F49F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_95FBF61CE369D318D854C50B3002C173" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_210957A71A9A9C6F0766C50B3002F49F" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_RestrictedStockAndPerformanceSharesMember" xlink:label="loc_trc_RestrictedStockAndPerformanceSharesMember_6B8E4A3AA853B4CEFA71C50B300301F3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_210957A71A9A9C6F0766C50B3002F49F" xlink:to="loc_trc_RestrictedStockAndPerformanceSharesMember_6B8E4A3AA853B4CEFA71C50B300301F3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_1E2A959E4838BC7129ACC50B3004289F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2FEEE3249E651AB78EBEC50B3004AE74" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_1E2A959E4838BC7129ACC50B3004289F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_5E5039AA0988C09BCB0FC50B30055440" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_1E2A959E4838BC7129ACC50B3004289F" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_5E5039AA0988C09BCB0FC50B30055440" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_0B0EB0C88FF170D0B113C50B3005B836" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_1E2A959E4838BC7129ACC50B3004289F" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_0B0EB0C88FF170D0B113C50B3005B836" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_EB63483E342BE6416ECCC50B30057A99" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_1E2A959E4838BC7129ACC50B3004289F" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_EB63483E342BE6416ECCC50B30057A99" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_7942DEF2C9867FE8BE94C50B3006D5D5" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_1E2A959E4838BC7129ACC50B3004289F" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_7942DEF2C9867FE8BE94C50B3006D5D5" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/StockCompensationRestrictedStockAndPerformanceShareGrantsTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/SummaryOfSignificantAccountingPolicies" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/SummaryOfSignificantAccountingPoliciesCompanyDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems" xlink:label="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_453DE1A7963590513FC8C50B30D8D65A" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable" xlink:label="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_B23520FD76E85C19302BC50B30C86F71" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_453DE1A7963590513FC8C50B30D8D65A" xlink:to="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_B23520FD76E85C19302BC50B30C86F71" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="loc_srt_StatementGeographicalAxis_A234854530CA00CAB2ABC50B30C8FB60" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_B23520FD76E85C19302BC50B30C86F71" xlink:to="loc_srt_StatementGeographicalAxis_A234854530CA00CAB2ABC50B30C8FB60" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_ECBA242365E61FC82D82C50B30C85EC1_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_A234854530CA00CAB2ABC50B30C8FB60" xlink:to="loc_srt_SegmentGeographicalDomain_ECBA242365E61FC82D82C50B30C85EC1_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_ECBA242365E61FC82D82C50B30C85EC1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_A234854530CA00CAB2ABC50B30C8FB60" xlink:to="loc_srt_SegmentGeographicalDomain_ECBA242365E61FC82D82C50B30C85EC1" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LosAngelesCaliforniaMember" xlink:label="loc_trc_LosAngelesCaliforniaMember_2E7057814BFB2FF1A725C50B30D8C21F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_ECBA242365E61FC82D82C50B30C85EC1" xlink:to="loc_trc_LosAngelesCaliforniaMember_2E7057814BFB2FF1A725C50B30D8C21F" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_BakersfieldCaliforniaMember" xlink:label="loc_trc_BakersfieldCaliforniaMember_5300A5A084819EE2FDE4C50B30D8BDD3" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_ECBA242365E61FC82D82C50B30C85EC1" xlink:to="loc_trc_BakersfieldCaliforniaMember_5300A5A084819EE2FDE4C50B30D8BDD3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NumberOfReportableSegments" xlink:label="loc_us-gaap_NumberOfReportableSegments_F43C3EFC61D5D9E4AF34C50B30D8DC22" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_453DE1A7963590513FC8C50B30D8D65A" xlink:to="loc_us-gaap_NumberOfReportableSegments_F43C3EFC61D5D9E4AF34C50B30D8DC22" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AreaOfLand" xlink:label="loc_us-gaap_AreaOfLand_CD920B20B714993EF05DC50B30D82906" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_453DE1A7963590513FC8C50B30D8D65A" xlink:to="loc_us-gaap_AreaOfLand_CD920B20B714993EF05DC50B30D82906" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_PropertyBorderDistancetoMajorCity" xlink:label="loc_trc_PropertyBorderDistancetoMajorCity_93D63AE8FF45B584A120C50B30D86BB6" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_453DE1A7963590513FC8C50B30D8D65A" xlink:to="loc_trc_PropertyBorderDistancetoMajorCity_93D63AE8FF45B584A120C50B30D86BB6" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_VariableInterestEntityNumberofEntitiesConsolidated" xlink:label="loc_trc_VariableInterestEntityNumberofEntitiesConsolidated_63D0F63F156BA30D0BAFC50B30D8EFA5" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_453DE1A7963590513FC8C50B30D8D65A" xlink:to="loc_trc_VariableInterestEntityNumberofEntitiesConsolidated_63D0F63F156BA30D0BAFC50B30D8EFA5" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/SummaryOfSignificantAccountingPoliciesCreditRiskDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConcentrationRiskLineItems" xlink:label="loc_us-gaap_ConcentrationRiskLineItems_55B3D28E28FD109D8C3EC50B30C88959" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConcentrationRiskTable" xlink:label="loc_us-gaap_ConcentrationRiskTable_E80D2C7F6664C723557AC50B30C841AB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_55B3D28E28FD109D8C3EC50B30C88959" xlink:to="loc_us-gaap_ConcentrationRiskTable_E80D2C7F6664C723557AC50B30C841AB" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConcentrationRiskByTypeAxis" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_02878C3E29C815585F0DC50B30C8578C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_E80D2C7F6664C723557AC50B30C841AB" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_02878C3E29C815585F0DC50B30C8578C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_56616E225900465FD5A5C50B30C83751_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_02878C3E29C815585F0DC50B30C8578C" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_56616E225900465FD5A5C50B30C83751_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_56616E225900465FD5A5C50B30C83751" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_02878C3E29C815585F0DC50B30C8578C" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_56616E225900465FD5A5C50B30C83751" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CustomerConcentrationRiskMember" xlink:label="loc_us-gaap_CustomerConcentrationRiskMember_1D7A1421158C3176AFD7C50B30C8A62C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_56616E225900465FD5A5C50B30C83751" xlink:to="loc_us-gaap_CustomerConcentrationRiskMember_1D7A1421158C3176AFD7C50B30C8A62C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_303E3E5DB96C099A60D0C50B30C8E552" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_E80D2C7F6664C723557AC50B30C841AB" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_303E3E5DB96C099A60D0C50B30C8E552" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_007A0AB8550B3AC028BEC50B30C855BE_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_303E3E5DB96C099A60D0C50B30C8E552" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_007A0AB8550B3AC028BEC50B30C855BE_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_007A0AB8550B3AC028BEC50B30C855BE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_303E3E5DB96C099A60D0C50B30C8E552" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_007A0AB8550B3AC028BEC50B30C855BE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerMember" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerMember_4AB49C0908DCF8D3967AC50B30C8DE5A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_007A0AB8550B3AC028BEC50B30C855BE" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerMember_4AB49C0908DCF8D3967AC50B30C8DE5A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MajorCustomersAxis" xlink:label="loc_srt_MajorCustomersAxis_CB0CADFB96DCACE03270C50B30C88A13" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_E80D2C7F6664C723557AC50B30C841AB" xlink:to="loc_srt_MajorCustomersAxis_CB0CADFB96DCACE03270C50B30C88A13" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_NameOfMajorCustomerDomain" xlink:label="loc_srt_NameOfMajorCustomerDomain_5CD45B4B998C6CD22B73C50B30C8F13B_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MajorCustomersAxis_CB0CADFB96DCACE03270C50B30C88A13" xlink:to="loc_srt_NameOfMajorCustomerDomain_5CD45B4B998C6CD22B73C50B30C8F13B_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_NameOfMajorCustomerDomain" xlink:label="loc_srt_NameOfMajorCustomerDomain_5CD45B4B998C6CD22B73C50B30C8F13B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MajorCustomersAxis_CB0CADFB96DCACE03270C50B30C88A13" xlink:to="loc_srt_NameOfMajorCustomerDomain_5CD45B4B998C6CD22B73C50B30C8F13B" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_PastoriaEnergyFacilityLLCMember" xlink:label="loc_trc_PastoriaEnergyFacilityLLCMember_BD5BC505EB28A57A1D71C50B30C891FB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_5CD45B4B998C6CD22B73C50B30C8F13B" xlink:to="loc_trc_PastoriaEnergyFacilityLLCMember_BD5BC505EB28A57A1D71C50B30C891FB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_9BFDBDC69E649E2B8A8CC50B30C8FF9D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_55B3D28E28FD109D8C3EC50B30C88959" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_9BFDBDC69E649E2B8A8CC50B30C8FF9D" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/SummaryOfSignificantAccountingPoliciesEnvironmentalExpendituresDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/SummaryOfSignificantAccountingPoliciesPropertyAndEquipmentDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_31CD26207C681B7534A2C50B30C8CCF7" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_5CDCFA35B42582B6A61AC50B30B9AC61" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_31CD26207C681B7534A2C50B30C8CCF7" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_5CDCFA35B42582B6A61AC50B30B9AC61" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_1C76D6F68A6D7A19A1A2C50B30B9596B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_5CDCFA35B42582B6A61AC50B30B9AC61" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_1C76D6F68A6D7A19A1A2C50B30B9596B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_7CE1A3F5A3C250124D15C50B30B9E804_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_1C76D6F68A6D7A19A1A2C50B30B9596B" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_7CE1A3F5A3C250124D15C50B30B9E804_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_7CE1A3F5A3C250124D15C50B30B9E804" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_1C76D6F68A6D7A19A1A2C50B30B9596B" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_7CE1A3F5A3C250124D15C50B30B9E804" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_VineyardsAndOrchardsMember" xlink:label="loc_trc_VineyardsAndOrchardsMember_393EDA40EB88944A1F54C50B30C899FA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_7CE1A3F5A3C250124D15C50B30B9E804" xlink:to="loc_trc_VineyardsAndOrchardsMember_393EDA40EB88944A1F54C50B30C899FA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherMachineryAndEquipmentMember" xlink:label="loc_us-gaap_OtherMachineryAndEquipmentMember_C5611CD3C15CB77682FFC50B30C8C91D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_7CE1A3F5A3C250124D15C50B30B9E804" xlink:to="loc_us-gaap_OtherMachineryAndEquipmentMember_C5611CD3C15CB77682FFC50B30C8C91D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BuildingAndBuildingImprovementsMember" xlink:label="loc_us-gaap_BuildingAndBuildingImprovementsMember_C026872BA0FFEB5281CEC50B30C82E1C" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_7CE1A3F5A3C250124D15C50B30B9E804" xlink:to="loc_us-gaap_BuildingAndBuildingImprovementsMember_C026872BA0FFEB5281CEC50B30C82E1C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LandAndLandImprovementsMember" xlink:label="loc_us-gaap_LandAndLandImprovementsMember_FDAA16C182F1B4A7BA17C50B30C89614" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_7CE1A3F5A3C250124D15C50B30B9E804" xlink:to="loc_us-gaap_LandAndLandImprovementsMember_FDAA16C182F1B4A7BA17C50B30C89614" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConstructionInProgressMember" xlink:label="loc_us-gaap_ConstructionInProgressMember_0A3B40E53B7CC75DF140C50B30C8BE23" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_7CE1A3F5A3C250124D15C50B30B9E804" xlink:to="loc_us-gaap_ConstructionInProgressMember_0A3B40E53B7CC75DF140C50B30C8BE23" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_49C7F08980C54737847AC50B30C8B72C" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_5CDCFA35B42582B6A61AC50B30B9AC61" xlink:to="loc_srt_RangeAxis_49C7F08980C54737847AC50B30C8B72C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_3D75327866318BA9F1D1C50B30C873A5_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_49C7F08980C54737847AC50B30C8B72C" xlink:to="loc_srt_RangeMember_3D75327866318BA9F1D1C50B30C873A5_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_3D75327866318BA9F1D1C50B30C873A5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_49C7F08980C54737847AC50B30C8B72C" xlink:to="loc_srt_RangeMember_3D75327866318BA9F1D1C50B30C873A5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_6881CCD81F9959946048C50B30C81232" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_3D75327866318BA9F1D1C50B30C873A5" xlink:to="loc_srt_MinimumMember_6881CCD81F9959946048C50B30C81232" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_D654EB53FA592C3FF4E0C50B30C89D52" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_3D75327866318BA9F1D1C50B30C873A5" xlink:to="loc_srt_MaximumMember_D654EB53FA592C3FF4E0C50B30C89D52" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_CounterpartyNameAxis" xlink:label="loc_srt_CounterpartyNameAxis_C07C9D44004F7D79B6FDC50B30C815DD" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_5CDCFA35B42582B6A61AC50B30B9AC61" xlink:to="loc_srt_CounterpartyNameAxis_C07C9D44004F7D79B6FDC50B30C815DD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_EBC75E0A1E3BCB6CA3F8C50B30C81AAF_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_C07C9D44004F7D79B6FDC50B30C815DD" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_EBC75E0A1E3BCB6CA3F8C50B30C81AAF_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_EBC75E0A1E3BCB6CA3F8C50B30C81AAF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_C07C9D44004F7D79B6FDC50B30C815DD" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_EBC75E0A1E3BCB6CA3F8C50B30C81AAF" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_DMBPacificLLCMember" xlink:label="loc_trc_DMBPacificLLCMember_8A5A7246DEE11A2F33BDC50B30C8092D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_EBC75E0A1E3BCB6CA3F8C50B30C81AAF" xlink:to="loc_trc_DMBPacificLLCMember_8A5A7246DEE11A2F33BDC50B30C8092D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_8104160B08C0EABB4BD5C50B30C8D2B3" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_5CDCFA35B42582B6A61AC50B30B9AC61" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_8104160B08C0EABB4BD5C50B30C8D2B3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleNameDomain" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_6C63DCCCD861E9E9E5F2C50B30C8223A_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_8104160B08C0EABB4BD5C50B30C8D2B3" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_6C63DCCCD861E9E9E5F2C50B30C8223A_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleNameDomain" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_6C63DCCCD861E9E9E5F2C50B30C8223A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_8104160B08C0EABB4BD5C50B30C8D2B3" xlink:to="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_6C63DCCCD861E9E9E5F2C50B30C8223A" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_TransferableWaterMember" xlink:label="loc_trc_TransferableWaterMember_43EAA84CBB99B6995F1EC50B30C81B82" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_6C63DCCCD861E9E9E5F2C50B30C8223A" xlink:to="loc_trc_TransferableWaterMember_43EAA84CBB99B6995F1EC50B30C81B82" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_125475994AC761B47C1AC50B30C896FD" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_31CD26207C681B7534A2C50B30C8CCF7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_125475994AC761B47C1AC50B30C896FD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_EC718352CD874853DF0DC50B30C8CFCB" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_31CD26207C681B7534A2C50B30C8CCF7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_EC718352CD874853DF0DC50B30C8CFCB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_C5D698B9D03B0FC7083AC50B30C8D4B9" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_31CD26207C681B7534A2C50B30C8CCF7" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_C5D698B9D03B0FC7083AC50B30C8D4B9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_AD27F2C4932051C1D574C50B30C813B7" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_31CD26207C681B7534A2C50B30C8CCF7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_AD27F2C4932051C1D574C50B30C813B7" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_LongtermWaterAssetsVolume" xlink:label="loc_trc_LongtermWaterAssetsVolume_4DE5774D44D0E851AAF3C50B30C835C6" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_31CD26207C681B7534A2C50B30C8CCF7" xlink:to="loc_trc_LongtermWaterAssetsVolume_4DE5774D44D0E851AAF3C50B30C835C6" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/SummaryOfSignificantAccountingPoliciesRecentlyAdoptedAccountingPronouncementsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_082E12DAFFA20B461816C50B30A94F02" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_4F4D6F96FD9A12DE258CC50B30A90923" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_082E12DAFFA20B461816C50B30A94F02" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_4F4D6F96FD9A12DE258CC50B30A90923" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_241DA8E73D83292F3F6DC50B30A94175" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_4F4D6F96FD9A12DE258CC50B30A90923" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_241DA8E73D83292F3F6DC50B30A94175" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_447B8A20251E186662B2C50B30A913E6_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_241DA8E73D83292F3F6DC50B30A94175" xlink:to="loc_us-gaap_TypeOfAdoptionMember_447B8A20251E186662B2C50B30A913E6_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_447B8A20251E186662B2C50B30A913E6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_241DA8E73D83292F3F6DC50B30A94175" xlink:to="loc_us-gaap_TypeOfAdoptionMember_447B8A20251E186662B2C50B30A913E6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountingStandardsUpdate201602Member" xlink:label="loc_us-gaap_AccountingStandardsUpdate201602Member_4E2A9766CED710FBDB4BC50B30A966BB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfAdoptionMember_447B8A20251E186662B2C50B30A913E6" xlink:to="loc_us-gaap_AccountingStandardsUpdate201602Member_4E2A9766CED710FBDB4BC50B30A966BB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseTermOfContract" xlink:label="loc_us-gaap_LesseeOperatingLeaseTermOfContract_77A013C77AED08E129B2C50B30A97EBF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_082E12DAFFA20B461816C50B30A94F02" xlink:to="loc_us-gaap_LesseeOperatingLeaseTermOfContract_77A013C77AED08E129B2C50B30A97EBF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_DDFD88662BD80DA6A4F3C50B30A91187" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_082E12DAFFA20B461816C50B30A94F02" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_DDFD88662BD80DA6A4F3C50B30A91187" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="loc_us-gaap_OperatingLeaseLiability_44BAED24C02393A4FA79C50B30A9F26F" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_082E12DAFFA20B461816C50B30A94F02" xlink:to="loc_us-gaap_OperatingLeaseLiability_44BAED24C02393A4FA79C50B30A9F26F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseDiscountRate" xlink:label="loc_us-gaap_LesseeOperatingLeaseDiscountRate_C4A2650B4A6199509D9AC50B30A9E977" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_082E12DAFFA20B461816C50B30A94F02" xlink:to="loc_us-gaap_LesseeOperatingLeaseDiscountRate_C4A2650B4A6199509D9AC50B30A9E977" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/SummaryOfSignificantAccountingPoliciesTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/SummaryOfSignificantAccountingPoliciesVineyardsAndOrchardsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems" xlink:label="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_F5ED6CFC4518FD3D67F2C50B30B9B16D" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable" xlink:label="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_2168E81F7D2BDE5F4187C50B30B9FA10" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_F5ED6CFC4518FD3D67F2C50B30B9B16D" xlink:to="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_2168E81F7D2BDE5F4187C50B30B9FA10" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_B55EDF127E5A2EDA52EDC50B30B9A0FC" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_2168E81F7D2BDE5F4187C50B30B9FA10" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_B55EDF127E5A2EDA52EDC50B30B9A0FC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2F2A5ABC1B18192C74AFC50B30B92ED1_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_B55EDF127E5A2EDA52EDC50B30B9A0FC" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2F2A5ABC1B18192C74AFC50B30B92ED1_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2F2A5ABC1B18192C74AFC50B30B92ED1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_B55EDF127E5A2EDA52EDC50B30B9A0FC" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2F2A5ABC1B18192C74AFC50B30B92ED1" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_VineyardsandOtherFarmingRelatedAssetsMember" xlink:label="loc_trc_VineyardsandOtherFarmingRelatedAssetsMember_CCD8F01BF1F31C372E3EC50B30B92BBA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2F2A5ABC1B18192C74AFC50B30B92ED1" xlink:to="loc_trc_VineyardsandOtherFarmingRelatedAssetsMember_CCD8F01BF1F31C372E3EC50B30B92BBA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_EEAEB9F9BBF1B94151E8C50B30B96A9D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_2168E81F7D2BDE5F4187C50B30B9FA10" xlink:to="loc_srt_ConsolidationItemsAxis_EEAEB9F9BBF1B94151E8C50B30B96A9D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_4198BAA1162768C7DCE4C50B30B9DFA7_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_EEAEB9F9BBF1B94151E8C50B30B96A9D" xlink:to="loc_srt_ConsolidationItemsDomain_4198BAA1162768C7DCE4C50B30B9DFA7_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_4198BAA1162768C7DCE4C50B30B9DFA7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_EEAEB9F9BBF1B94151E8C50B30B96A9D" xlink:to="loc_srt_ConsolidationItemsDomain_4198BAA1162768C7DCE4C50B30B9DFA7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_BE4B0AB3087259CB19DBC50B30B91080" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_4198BAA1162768C7DCE4C50B30B9DFA7" xlink:to="loc_us-gaap_OperatingSegmentsMember_BE4B0AB3087259CB19DBC50B30B91080" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_EA660E761D7992D51F8DC50B30B9642F" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_2168E81F7D2BDE5F4187C50B30B9FA10" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_EA660E761D7992D51F8DC50B30B9642F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_C07F581CD087DD384AFEC50B30B99A1F_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_EA660E761D7992D51F8DC50B30B9642F" xlink:to="loc_us-gaap_SegmentDomain_C07F581CD087DD384AFEC50B30B99A1F_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_C07F581CD087DD384AFEC50B30B99A1F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_EA660E761D7992D51F8DC50B30B9642F" xlink:to="loc_us-gaap_SegmentDomain_C07F581CD087DD384AFEC50B30B99A1F" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_FarmingAndAgricultureMember" xlink:label="loc_trc_FarmingAndAgricultureMember_29587985159E675E223CC50B30B96168" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_C07F581CD087DD384AFEC50B30B99A1F" xlink:to="loc_trc_FarmingAndAgricultureMember_29587985159E675E223CC50B30B96168" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="loc_srt_ProductOrServiceAxis_4DAAF5871A35D470DB08C50B30B973B2" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_2168E81F7D2BDE5F4187C50B30B9FA10" xlink:to="loc_srt_ProductOrServiceAxis_4DAAF5871A35D470DB08C50B30B973B2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_4A156FAA697B69E0497CC50B30B9EEDF_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_4DAAF5871A35D470DB08C50B30B973B2" xlink:to="loc_srt_ProductsAndServicesDomain_4A156FAA697B69E0497CC50B30B9EEDF_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_4A156FAA697B69E0497CC50B30B9EEDF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_4DAAF5871A35D470DB08C50B30B973B2" xlink:to="loc_srt_ProductsAndServicesDomain_4A156FAA697B69E0497CC50B30B9EEDF" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_AlmondsMember" xlink:label="loc_trc_AlmondsMember_2269138D8680134E4FD8C50B30B9BEB6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_4A156FAA697B69E0497CC50B30B9EEDF" xlink:to="loc_trc_AlmondsMember_2269138D8680134E4FD8C50B30B9BEB6" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_PistachiosMember" xlink:label="loc_trc_PistachiosMember_3F85ADE9254D959BCE27C50B30B9E079" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_4A156FAA697B69E0497CC50B30B9EEDF" xlink:to="loc_trc_PistachiosMember_3F85ADE9254D959BCE27C50B30B9E079" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_AcresofAbandonedVineyards" xlink:label="loc_trc_AcresofAbandonedVineyards_2403518E59AFAD2F02F4C50B30B96EE8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_F5ED6CFC4518FD3D67F2C50B30B9B16D" xlink:to="loc_trc_AcresofAbandonedVineyards_2403518E59AFAD2F02F4C50B30B96EE8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_02FB42447A5B6EBC0151C50B30B9E27F" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_F5ED6CFC4518FD3D67F2C50B30B9B16D" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_02FB42447A5B6EBC0151C50B30B9E27F" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_AbandonmentExpense" xlink:label="loc_trc_AbandonmentExpense_282EC18B4516BF6D53E9C50B30B971DF" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_F5ED6CFC4518FD3D67F2C50B30B9B16D" xlink:to="loc_trc_AbandonmentExpense_282EC18B4516BF6D53E9C50B30B971DF" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_FarmingRevenueAdjustmentToFinalSettlementPrice" xlink:label="loc_trc_FarmingRevenueAdjustmentToFinalSettlementPrice_D7DBCB5F9E5CFC6D4383C50B30B9478F" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_F5ED6CFC4518FD3D67F2C50B30B9B16D" xlink:to="loc_trc_FarmingRevenueAdjustmentToFinalSettlementPrice_D7DBCB5F9E5CFC6D4383C50B30B9478F" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/UnauditedQuarterlyOperatingResults" xlink:type="extended" />
  <link:definitionLink xlink:role="http://tejonranch.com/role/UnauditedQuarterlyOperatingResultsDetails" xlink:type="extended">
    <link:loc xlink:href="trc-20191231.xsd#trc_QuarterlyFinancialInformationLineItems" xlink:label="loc_trc_QuarterlyFinancialInformationLineItems_C039A639F2731498117AC50B2EB050F8" xlink:type="locator" />
    <link:loc xlink:href="trc-20191231.xsd#trc_QuarterlyFinancialInformationTable" xlink:label="loc_trc_QuarterlyFinancialInformationTable_AAD39662F3D6C46A90B1C50B2EAE10DF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_trc_QuarterlyFinancialInformationLineItems_C039A639F2731498117AC50B2EB050F8" xlink:to="loc_trc_QuarterlyFinancialInformationTable_AAD39662F3D6C46A90B1C50B2EAE10DF" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_F65ED01A97AAD6A1D361C50B2EAF5C29" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_trc_QuarterlyFinancialInformationTable_AAD39662F3D6C46A90B1C50B2EAE10DF" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_F65ED01A97AAD6A1D361C50B2EAF5C29" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_192D11208064707962DDC50B2EAF1DE5_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_F65ED01A97AAD6A1D361C50B2EAF5C29" xlink:to="loc_us-gaap_SegmentDomain_192D11208064707962DDC50B2EAF1DE5_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_192D11208064707962DDC50B2EAF1DE5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_F65ED01A97AAD6A1D361C50B2EAF5C29" xlink:to="loc_us-gaap_SegmentDomain_192D11208064707962DDC50B2EAF1DE5" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_SegmentProfitLossMember" xlink:label="loc_trc_SegmentProfitLossMember_8E2B8553FC8F589B7600C50B2EB0E9F1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_192D11208064707962DDC50B2EAF1DE5" xlink:to="loc_trc_SegmentProfitLossMember_8E2B8553FC8F589B7600C50B2EB0E9F1" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_RevenueAndNonoperatingIncome" xlink:label="loc_trc_RevenueAndNonoperatingIncome_72EE3C9DB078CB1C6CC2C50B2EB1EB85" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_QuarterlyFinancialInformationLineItems_C039A639F2731498117AC50B2EB050F8" xlink:to="loc_trc_RevenueAndNonoperatingIncome_72EE3C9DB078CB1C6CC2C50B2EB1EB85" xlink:type="arc" />
    <link:loc xlink:href="trc-20191231.xsd#trc_SegmentProfitLossExcludingEquityinEarnings" xlink:label="loc_trc_SegmentProfitLossExcludingEquityinEarnings_E1E267C64FE4C38584B3C50B2EB1B362" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_QuarterlyFinancialInformationLineItems_C039A639F2731498117AC50B2EB050F8" xlink:to="loc_trc_SegmentProfitLossExcludingEquityinEarnings_E1E267C64FE4C38584B3C50B2EB1B362" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_D792692C96D16212B7C5C50B2EB3F4F7" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_QuarterlyFinancialInformationLineItems_C039A639F2731498117AC50B2EB050F8" xlink:to="loc_us-gaap_ProfitLoss_D792692C96D16212B7C5C50B2EB3F4F7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_A73AB687B1D92E299E7CC50B2EB3CBE4" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_QuarterlyFinancialInformationLineItems_C039A639F2731498117AC50B2EB050F8" xlink:to="loc_us-gaap_NetIncomeLoss_A73AB687B1D92E299E7CC50B2EB3CBE4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_04080A740B5B798AEEE5C50B2EB3F5A2" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_QuarterlyFinancialInformationLineItems_C039A639F2731498117AC50B2EB050F8" xlink:to="loc_us-gaap_EarningsPerShareBasic_04080A740B5B798AEEE5C50B2EB3F5A2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_8E4048FE5E4D94EA8E04C50B2EB3B153" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_trc_QuarterlyFinancialInformationLineItems_C039A639F2731498117AC50B2EB050F8" xlink:to="loc_us-gaap_EarningsPerShareDiluted_8E4048FE5E4D94EA8E04C50B2EB3B153" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://tejonranch.com/role/UnauditedQuarterlyOperatingResultsTables" xlink:type="extended" />
</link:linkbase>
