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  <xs:element id="o_BusinessAcquisitionPreferredEquityInterestsAcquired" abstract="false" name="BusinessAcquisitionPreferredEquityInterestsAcquired" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_SeniorUnsecuredNotesPayable1125DueJuly2027Member" abstract="true" name="SeniorUnsecuredNotesPayable1125DueJuly2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="o_DebtInstrumentLengthOfExtensionOption" abstract="false" name="DebtInstrumentLengthOfExtensionOption" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="o_RealEstatePropertyInvestmentsAreaOfRealEstatePropertyAcquired" abstract="false" name="RealEstatePropertyInvestmentsAreaOfRealEstatePropertyAcquired" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:areaItemType"/>
  <xs:element id="o_UnsecuredDebtMaturingInJanuary2024Member" abstract="true" name="UnsecuredDebtMaturingInJanuary2024Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="o_ScheduleOfCashFlowSupplementalDisclosuresTable" abstract="true" name="ScheduleOfCashFlowSupplementalDisclosuresTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="o_PropertySalesCount" abstract="false" name="PropertySalesCount" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="o_DebtInstrumentCovenantAggregateUnencumberedAssetsAsPercentageOfOutstandingUnsecuredDebt" abstract="false" name="DebtInstrumentCovenantAggregateUnencumberedAssetsAsPercentageOfOutstandingUnsecuredDebt" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="o_SeniorUnsecuredNotesPayable3100DueDecember2029Member" abstract="true" name="SeniorUnsecuredNotesPayable3100DueDecember2029Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="o_BlackstoneRealEstateTrustIncMember" abstract="true" name="BlackstoneRealEstateTrustIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_FiniteLivedIntangibleAssetsRentalIncomeIncreaseDecreaseYearThree" abstract="false" name="FiniteLivedIntangibleAssetsRentalIncomeIncreaseDecreaseYearThree" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_ScheduleOfFutureImpactOfAboveMarketBelowMarketAndInPlaceLeaseIntangiblesTableTextBlock" abstract="false" name="ScheduleOfFutureImpactOfAboveMarketBelowMarketAndInPlaceLeaseIntangiblesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="o_ReLeasingCosts" abstract="false" name="ReLeasingCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_NumberOfDevelopmentJointVenturesAcquired" abstract="false" name="NumberOfDevelopmentJointVenturesAcquired" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="o_InterestRateSwaptionSoldMember" abstract="true" name="InterestRateSwaptionSoldMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="o_SeniorUnsecuredNotesPayable2730DueMay2034Member" abstract="true" name="SeniorUnsecuredNotesPayable2730DueMay2034Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="o_AssetAcquisitionInitialAverageCashLeaseYieldForAcquiredPropertiesPercentage" abstract="false" name="AssetAcquisitionInitialAverageCashLeaseYieldForAcquiredPropertiesPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="o_NumberOfDevelopmentJointVentures" abstract="false" name="NumberOfDevelopmentJointVentures" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="o_PropertiesNewMember" abstract="true" name="PropertiesNewMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="o_PropertiesOccupiedByApplicableTenantAssociatedWithMortgages" abstract="false" name="PropertiesOccupiedByApplicableTenantAssociatedWithMortgages" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="o_TheBellagioLasVegasMember" abstract="true" name="TheBellagioLasVegasMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_RealEstatePropertiesAcquiredLandRightOfUseAssetsUnderLongTermGroundLeases" abstract="false" name="RealEstatePropertiesAcquiredLandRightOfUseAssetsUnderLongTermGroundLeases" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_ForeignExchangeContractGBPMember" abstract="true" name="ForeignExchangeContractGBPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="o_RealEstatePropertiesAcquiredLeaseIntangibleLiabilities" abstract="false" name="RealEstatePropertiesAcquiredLeaseIntangibleLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_FiniteLivedIntangibleAssetsRentalIncomeIncreaseDecreaseYearOne" abstract="false" name="FiniteLivedIntangibleAssetsRentalIncomeIncreaseDecreaseYearOne" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_RealEstatePropertiesAcquiredOtherAssetsLoanReceivables" abstract="false" name="RealEstatePropertiesAcquiredOtherAssetsLoanReceivables" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_SettlementCreditsForAcquiredPropertiesAsReimbursementForRentFreePeriod" abstract="false" name="SettlementCreditsForAcquiredPropertiesAsReimbursementForRentFreePeriod" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_StockSettledDuringPeriodSharesNewIssues" abstract="false" name="StockSettledDuringPeriodSharesNewIssues" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="o_InvestmentBuildingAndBuildingImprovementsPriorToImpairment" abstract="false" name="InvestmentBuildingAndBuildingImprovementsPriorToImpairment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_FiniteLivedIntangibleAssetsRentalIncomeIncreaseDecrease" abstract="false" name="FiniteLivedIntangibleAssetsRentalIncomeIncreaseDecrease" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_SingleClientPropertyMember" abstract="true" name="SingleClientPropertyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="o_SeniorUnsecuredNotesPayable3250DueJune2029Member" abstract="true" name="SeniorUnsecuredNotesPayable3250DueJune2029Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="o_RealEstatePropertiesAcquiredIntangibleAssets" abstract="false" name="RealEstatePropertiesAcquiredIntangibleAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_DebtInstrumentCovenantDebtToTotalAdjustedAssetsRatio" abstract="false" name="DebtInstrumentCovenantDebtToTotalAdjustedAssetsRatio" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="o_ForeignCurrencyAndDerivativeGainsLossesNetMember" abstract="true" name="ForeignCurrencyAndDerivativeGainsLossesNetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="o_SeniorUnsecuredNotesPayable4850DueMarch2030Member" abstract="true" name="SeniorUnsecuredNotesPayable4850DueMarch2030Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="o_ScheduleOfAcquiredLeaseIntangibleLiabilitiesTableTextBlock" abstract="false" name="ScheduleOfAcquiredLeaseIntangibleLiabilitiesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="o_NumberOfNoncontrollingInterestsConsolidated" abstract="false" name="NumberOfNoncontrollingInterestsConsolidated" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="o_FiniteLivedIntangibleAssetsRentalIncomeIncreaseDecreaseAbstract" abstract="true" name="FiniteLivedIntangibleAssetsRentalIncomeIncreaseDecreaseAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="o_SeniorUnsecuredNotesPayable1875DueJanuary2027Member" abstract="true" name="SeniorUnsecuredNotesPayable1875DueJanuary2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="o_SeniorUnsecuredNotesPayable3650DueJanuary2028Member" abstract="true" name="SeniorUnsecuredNotesPayable3650DueJanuary2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="o_RealEstatePropertiesAcquiredLand" abstract="false" name="RealEstatePropertiesAcquiredLand" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_SeniorUnsecuredNotesPayableDueDecember2028Member" abstract="true" name="SeniorUnsecuredNotesPayableDueDecember2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="o_DerivativeRealizedGainLossReclassificationUponSettlement" abstract="false" name="DerivativeRealizedGainLossReclassificationUponSettlement" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_RealEstateInvestmentsInExistingPropertiesMember" abstract="true" name="RealEstateInvestmentsInExistingPropertiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="o_RealEstatePropertyInvestmentsNumberOfPropertiesUnderDevelopment" abstract="false" name="RealEstatePropertyInvestmentsNumberOfPropertiesUnderDevelopment" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="o_MortgagesRepaidInFullMember" abstract="true" name="MortgagesRepaidInFullMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="o_RentalRevenueGeneratedFromAcquisitionsInvestmentGradeTenantsPercentage" abstract="false" name="RentalRevenueGeneratedFromAcquisitionsInvestmentGradeTenantsPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="o_AtTheMarketProgramMember" abstract="true" name="AtTheMarketProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="o_SeniorUnsecuredNotesPayableDueMarch2030Member" abstract="true" name="SeniorUnsecuredNotesPayableDueMarch2030Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="o_ProceedsFromSaleOfPropertyHeldForSaleIncludingPropertySwapNet" abstract="false" name="ProceedsFromSaleOfPropertyHeldForSaleIncludingPropertySwapNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_SingleClientPropertiesPercentage" abstract="false" name="SingleClientPropertiesPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="o_SeniorUnsecuredNotesPayable4600DueFebruary2024Member" abstract="true" name="SeniorUnsecuredNotesPayable4600DueFebruary2024Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="o_DebtInstrumentNumber" abstract="false" name="DebtInstrumentNumber" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="o_RepaymentsOfLongTermLinesOfCreditAndCommercialPaper" abstract="false" name="RepaymentsOfLongTermLinesOfCreditAndCommercialPaper" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_ScheduleOfCashFlowSupplementalDisclosuresLineItems" abstract="true" name="ScheduleOfCashFlowSupplementalDisclosuresLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
</xs:schema>
