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  <xs:element id="o_SeniorUnsecuredNotesPayable1625DueDecember2030Member" abstract="true" name="SeniorUnsecuredNotesPayable1625DueDecember2030Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_SeniorUnsecuredNotesPayable4875Due2030Member" abstract="true" name="SeniorUnsecuredNotesPayable4875Due2030Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_SeniorUnsecuredNotesPayable5.750DueDecember2031Member" abstract="true" name="SeniorUnsecuredNotesPayable5.750DueDecember2031Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_SeniorUnsecuredNotesPayable3.375Due2031Member" abstract="true" name="SeniorUnsecuredNotesPayable3.375Due2031Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_SeniorUnsecuredNotesPayable3.625Due2032Member" abstract="true" name="SeniorUnsecuredNotesPayable3.625Due2032Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_SeniorUnsecuredNotesPayable1750DueJuly2033Member" abstract="true" name="SeniorUnsecuredNotesPayable1750DueJuly2033Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_SeniorUnsecuredNotesPayable5125Due2034Member" abstract="true" name="SeniorUnsecuredNotesPayable5125Due2034Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_SeniorUnsecuredNotesPayable3.875Due2035Member" abstract="true" name="SeniorUnsecuredNotesPayable3.875Due2035Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_SeniorUnsecuredNotesPayable6.000DueDecember2039Member" abstract="true" name="SeniorUnsecuredNotesPayable6.000DueDecember2039Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_SeniorUnsecuredNotesPayable5.250DueSeptember2041Member" abstract="true" name="SeniorUnsecuredNotesPayable5.250DueSeptember2041Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_SeniorUnsecuredNotesPayable2500DueJanuary2042Member" abstract="true" name="SeniorUnsecuredNotesPayable2500DueJanuary2042Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_InvestmentInLoansAndFinancingReceivablesNet" abstract="false" name="InvestmentInLoansAndFinancingReceivablesNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_RevolvingCreditFacilityAndCommercialPaper" abstract="false" name="RevolvingCreditFacilityAndCommercialPaper" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_GainLossOnForeignCurrencyAndUnrealizedDerivativesNet" abstract="false" name="GainLossOnForeignCurrencyAndUnrealizedDerivativesNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_NoncontrollingInterestReallocationOfEquity" abstract="false" name="NoncontrollingInterestReallocationOfEquity" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_NoncashInterestOnDerivatives" abstract="false" name="NoncashInterestOnDerivatives" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_PaidInKindInterestNet" abstract="false" name="PaidInKindInterestNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_ProceedsFromLongTermLinesOfCreditAndIssuanceOfCommercialPaper" abstract="false" name="ProceedsFromLongTermLinesOfCreditAndIssuanceOfCommercialPaper" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_ProceedsFromDividendReinvestmentAndStockPurchasePlanNet" abstract="false" name="ProceedsFromDividendReinvestmentAndStockPurchasePlanNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_PropertiesAcquiredRealEstateInvestmentsTextBlock" abstract="false" name="PropertiesAcquiredRealEstateInvestmentsTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="o_CreditFacilitiesAndCommercialPaperProgramsMember" abstract="true" name="CreditFacilitiesAndCommercialPaperProgramsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_SeniorUnsecuredTermLoansMember" abstract="true" name="SeniorUnsecuredTermLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_EquityOfferingCostsPolicyTextBlock" abstract="false" name="EquityOfferingCostsPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="o_ScheduleOfAcquiredLeaseIntangibleAssetsTableTextBlock" abstract="false" name="ScheduleOfAcquiredLeaseIntangibleAssetsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="o_ScheduleOfAcquiredLeaseIntangibleLiabilitiesTableTextBlock" abstract="false" name="ScheduleOfAcquiredLeaseIntangibleLiabilitiesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="o_ScheduleOfAssetAcquisitionsAllocationTableTextBlock" abstract="false" name="ScheduleOfAssetAcquisitionsAllocationTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="o_ScheduleOfFutureImpactOfAboveMarketBelowMarketAndInPlaceLeaseIntangiblesTableTextBlock" abstract="false" name="ScheduleOfFutureImpactOfAboveMarketBelowMarketAndInPlaceLeaseIntangiblesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="o_ScheduleOfMinorityInterestRollForwardTableTextBlock" abstract="false" name="ScheduleOfMinorityInterestRollForwardTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="o_ScheduleOfDerivativeAndForeignCurrencyGainLossTableTextBlock" abstract="false" name="ScheduleOfDerivativeAndForeignCurrencyGainLossTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="o_ScheduleOfCommonStockIssuancesTableTextBlock" abstract="false" name="ScheduleOfCommonStockIssuancesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="o_RealEstatePropertyLocationsNumberOfStates" abstract="false" name="RealEstatePropertyLocationsNumberOfStates" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="o_FiniteLivedIntangibleAssetsOther" abstract="false" name="FiniteLivedIntangibleAssetsOther" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_InvestmentInPreferredEquity" abstract="false" name="InvestmentInPreferredEquity" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_OtherCorporateAssetsNet" abstract="false" name="OtherCorporateAssetsNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_MortgagesLoansPayableAndLineOfCreditMember" abstract="true" name="MortgagesLoansPayableAndLineOfCreditMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_AccruedPropertyExpenses" abstract="false" name="AccruedPropertyExpenses" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_PropertiesNewMember" abstract="true" name="PropertiesNewMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_PropertiesUnderDevelopmentOrExpansionMember" abstract="true" name="PropertiesUnderDevelopmentOrExpansionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_RealEstatePropertyInvestmentsNumberOfNewProperties" abstract="false" name="RealEstatePropertyInvestmentsNumberOfNewProperties" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="o_RealEstatePropertyInvestmentsNumberOfPropertiesUnderDevelopment" abstract="false" name="RealEstatePropertyInvestmentsNumberOfPropertiesUnderDevelopment" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="o_RealEstatePropertyInvestmentsNumberOfNewPropertiesAndPropertiesUnderDevelopment" abstract="false" name="RealEstatePropertyInvestmentsNumberOfNewPropertiesAndPropertiesUnderDevelopment" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="o_RealEstatePropertyInvestmentsValueOfPropertiesAcquired" abstract="false" name="RealEstatePropertyInvestmentsValueOfPropertiesAcquired" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_AcquiredPropertiesPercentageByTypeOfRealEstate" abstract="false" name="AcquiredPropertiesPercentageByTypeOfRealEstate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="o_RentalRevenueGeneratedFromAcquisitionsInvestmentGradeTenantsPercentage" abstract="false" name="RentalRevenueGeneratedFromAcquisitionsInvestmentGradeTenantsPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="o_RealEstatePropertiesAcquiredLand" abstract="false" name="RealEstatePropertiesAcquiredLand" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_RealEstatePropertiesAcquiredBuildingsAndImprovements" abstract="false" name="RealEstatePropertiesAcquiredBuildingsAndImprovements" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_RealEstatePropertiesAcquiredIntangibleAssets" abstract="false" name="RealEstatePropertiesAcquiredIntangibleAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_RealEstatePropertiesAcquiredOtherAssets" abstract="false" name="RealEstatePropertiesAcquiredOtherAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_RealEstatePropertiesAcquiredLeaseIntangibleLiabilities" abstract="false" name="RealEstatePropertiesAcquiredLeaseIntangibleLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_RealEstatePropertiesAcquiredOtherLiabilities" abstract="false" name="RealEstatePropertiesAcquiredOtherLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_RealEstatePropertiesAcquiredAssetsAcquiredAndLiabilitiesAssumedNet" abstract="false" name="RealEstatePropertiesAcquiredAssetsAcquiredAndLiabilitiesAssumedNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_RealEstatePropertiesAcquiredOtherAssetsLoanReceivables" abstract="false" name="RealEstatePropertiesAcquiredOtherAssetsLoanReceivables" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_AcquiredFiniteLivedIntangibleLiabilitiesWeightedAverageUsefulLife" abstract="false" name="AcquiredFiniteLivedIntangibleLiabilitiesWeightedAverageUsefulLife" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="o_RealEstatePropertiesAcquiredOtherLiabilitiesDeferredRentOnBelowMarketLeases" abstract="false" name="RealEstatePropertiesAcquiredOtherLiabilitiesDeferredRentOnBelowMarketLeases" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_UKRetailParkPropertiesMember" abstract="true" name="UKRetailParkPropertiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_AssetAcquisitionAcquiredNumber" abstract="false" name="AssetAcquisitionAcquiredNumber" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="o_AssetAcquisitionProFormaInformationRevenueOfAcquiredPropertiesSinceAcquisitionDateActual" abstract="false" name="AssetAcquisitionProFormaInformationRevenueOfAcquiredPropertiesSinceAcquisitionDateActual" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_AssetAcquisitionProFormaInformationEarningsOrLossOfAcquiredPropertiesSinceAcquisitionDateActual" abstract="false" name="AssetAcquisitionProFormaInformationEarningsOrLossOfAcquiredPropertiesSinceAcquisitionDateActual" 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-types:domainItemType"/>
  <xs:element id="o_NonrecurringBuildingRealEstateImprovements" abstract="false" name="NonrecurringBuildingRealEstateImprovements" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_RecurringCapitalExpendituresRealEstateImprovements" abstract="false" name="RecurringCapitalExpendituresRealEstateImprovements" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_LeasesAboveAndBelowMarketMember" abstract="true" name="LeasesAboveAndBelowMarketMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_FiniteLivedIntangibleAssetsRentalIncomeIncreaseDecreaseAbstract" abstract="true" name="FiniteLivedIntangibleAssetsRentalIncomeIncreaseDecreaseAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="o_FiniteLivedIntangibleAssetsRentalIncomeIncreaseDecreaseRemainderOfFiscalYear" abstract="false" name="FiniteLivedIntangibleAssetsRentalIncomeIncreaseDecreaseRemainderOfFiscalYear" nillable="true" xbrli:periodType="instant" 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_FiniteLivedIntangibleAssetsRentalIncomeIncreaseDecreaseYearTwo" abstract="false" name="FiniteLivedIntangibleAssetsRentalIncomeIncreaseDecreaseYearTwo" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_FiniteLivedIntangibleAssetsRentalIncomeIncreaseDecreaseYearFour" abstract="false" name="FiniteLivedIntangibleAssetsRentalIncomeIncreaseDecreaseYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_FiniteLivedIntangibleAssetsRentalIncomeIncreaseDecreaseAfterYearFour" abstract="false" name="FiniteLivedIntangibleAssetsRentalIncomeIncreaseDecreaseAfterYearFour" nillable="true" xbrli:periodType="instant" 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_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" abstract="false" name="FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_PropertySalesCount" abstract="false" name="PropertySalesCount" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <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_GainLossOnSaleOfPropertiesExcludingAdditionalProceedsReceived" abstract="false" name="GainLossOnSaleOfPropertiesExcludingAdditionalProceedsReceived" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_DataCenterJointVentureMember" abstract="true" name="DataCenterJointVentureMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_BellagioLasVegasJointVentureMember" abstract="true" name="BellagioLasVegasJointVentureMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_BellagioLasVegasJointVentureCommonEquityInterestMember" abstract="true" name="BellagioLasVegasJointVentureCommonEquityInterestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_BellagioLasVegasJointVenturePreferredEquityInterestMember" abstract="true" name="BellagioLasVegasJointVenturePreferredEquityInterestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_PassportParkJointVentureMember" abstract="true" name="PassportParkJointVentureMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_PassportParkJointVenturePreferredEquityInterestMember" abstract="true" name="PassportParkJointVenturePreferredEquityInterestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_EquityMethodInvestmentNumberOfRelatedProperties" abstract="false" name="EquityMethodInvestmentNumberOfRelatedProperties" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="o_RealEstateInvestmentEstimatedDevelopmentCosts" abstract="false" name="RealEstateInvestmentEstimatedDevelopmentCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_EquityMethodInvestmentPreferredCumulativeReturnPercentage" abstract="false" name="EquityMethodInvestmentPreferredCumulativeReturnPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="o_RealEstatePropertiesAcquiredLiabilities" abstract="false" name="RealEstatePropertiesAcquiredLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_EquityMethodInvestmentAdditionalToFinanceDevelopment" abstract="false" name="EquityMethodInvestmentAdditionalToFinanceDevelopment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_SecuredLoansMember" abstract="true" name="SecuredLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_ConstructionLoanMember" abstract="true" name="ConstructionLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_MortgageLoanMember" abstract="true" name="MortgageLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_UnsecuredAndMezzanineMember" abstract="true" name="UnsecuredAndMezzanineMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_FinancingReceivableExcludingAccruedInterestUnpaidPrincipalBalance" abstract="false" name="FinancingReceivableExcludingAccruedInterestUnpaidPrincipalBalance" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_FinancingReceivableCommitmentToLend" abstract="false" name="FinancingReceivableCommitmentToLend" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_FinancingReceivableWeightedAverageTerm" abstract="false" name="FinancingReceivableWeightedAverageTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="o_FinancingReceivableWeightedAverageInterestRate" abstract="false" name="FinancingReceivableWeightedAverageInterestRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
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  <xs:element id="o_ImpairedPropertiesSoldNumber" abstract="false" name="ImpairedPropertiesSoldNumber" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="o_ImpairedAssetsMeasurementInput" abstract="false" name="ImpairedAssetsMeasurementInput" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="o_CurrencySwapUSDMember" abstract="true" name="CurrencySwapUSDMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_CurrencySwapEURMember" abstract="true" name="CurrencySwapEURMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_CurrencySwapUSD1Member" abstract="true" name="CurrencySwapUSD1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_CurrencySwapGBPMember" abstract="true" name="CurrencySwapGBPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_CurrencySwapUSD2Member" abstract="true" name="CurrencySwapUSD2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_CurrencySwapEUR1Member" abstract="true" name="CurrencySwapEUR1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_CurrencySwapUSD3Member" abstract="true" name="CurrencySwapUSD3Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_CurrencySwapEUR2Member" abstract="true" name="CurrencySwapEUR2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_ForeignCurrencyForwardGBPUSDMember" abstract="true" name="ForeignCurrencyForwardGBPUSDMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_ForeignCurrencyForwardEURUSDMember" abstract="true" name="ForeignCurrencyForwardEURUSDMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_ForeignExchangeContractEURGBPMember" abstract="true" name="ForeignExchangeContractEURGBPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_ForeignExchangeContractGBPUSDMember" abstract="true" name="ForeignExchangeContractGBPUSDMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_ForeignExchangeContractEURToPLNMember" abstract="true" name="ForeignExchangeContractEURToPLNMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_DerivativeNumberOfInstrumentsEnteredInto" abstract="false" name="DerivativeNumberOfInstrumentsEnteredInto" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="o_OtherComprehensiveIncomeLossHedgesGainLossAfterReclassificationAndTaxParent" abstract="false" name="OtherComprehensiveIncomeLossHedgesGainLossAfterReclassificationAndTaxParent" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_ForeignCurrencyAndDerivativeGainsLossesNetRealizedAbstract" abstract="true" name="ForeignCurrencyAndDerivativeGainsLossesNetRealizedAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="o_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsRealizedGainLossOnSettlement" abstract="false" name="DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsRealizedGainLossOnSettlement" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_ForeignCurrencyAndDerivativeRealizedGainLossSettlementWithThirdParties" abstract="false" name="ForeignCurrencyAndDerivativeRealizedGainLossSettlementWithThirdParties" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_GainLossOnForeignCurrencyAndDerivativeNetRealized" abstract="false" name="GainLossOnForeignCurrencyAndDerivativeNetRealized" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_ForeignCurrencyAndDerivativeGainsLossesNetUnrealizedAbstract" abstract="true" name="ForeignCurrencyAndDerivativeGainsLossesNetUnrealizedAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="o_UnrealizedGainLossReMeasurementCertainAssetsAndLiabilities" abstract="false" name="UnrealizedGainLossReMeasurementCertainAssetsAndLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_GainLossOnForeignCurrencyAndDerivativeNetUnrealized" abstract="false" name="GainLossOnForeignCurrencyAndDerivativeNetUnrealized" nillable="true" xbrli:periodType="duration" 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-types:domainItemType"/>
  <xs:element id="o_PropertyAvailableForLeaseOrSaleMember" abstract="true" name="PropertyAvailableForLeaseOrSaleMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_SingleClientPropertiesPercentage" abstract="false" name="SingleClientPropertiesPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="o_MinimumRentalIncome" abstract="false" name="MinimumRentalIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_TenantReimbursementIncome" abstract="false" name="TenantReimbursementIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_PercentageRentalIncome" abstract="false" name="PercentageRentalIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_LeaseTerminationIncome" abstract="false" name="LeaseTerminationIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_OtherRentalIncome" abstract="false" name="OtherRentalIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_LessorLeaseProvisionForDoubtfulAccounts" abstract="false" name="LessorLeaseProvisionForDoubtfulAccounts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_AtTheMarketProgramMember" abstract="true" name="AtTheMarketProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_DividendReinvestmentAndStockPurchasePlanMember" abstract="true" name="DividendReinvestmentAndStockPurchasePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_DividendReinvestmentAndStockPurchasePlanAuthorizedShares" abstract="false" name="DividendReinvestmentAndStockPurchasePlanAuthorizedShares" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="o_ForwardSaleConfirmationsMember" abstract="true" name="ForwardSaleConfirmationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_AtMarketProgramAbstract" abstract="true" name="AtMarketProgramAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="o_ProceedsFromTheAtTheMarketStockPurchaseProgram" abstract="false" name="ProceedsFromTheAtTheMarketStockPurchaseProgram" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_PaymentsOfStockIssuanceCostsSalesAgentCommissionAndOtherOfferingExpenses" abstract="false" name="PaymentsOfStockIssuanceCostsSalesAgentCommissionAndOtherOfferingExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_DividendReinvestmentAndStockPurchasePlanAbstract" abstract="true" name="DividendReinvestmentAndStockPurchasePlanAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="o_RestrictedStockAwardsAndRestrictedStockUnitsMember" abstract="true" name="RestrictedStockAwardsAndRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_ConvertiblePartnershipUnitsMember" abstract="true" name="ConvertiblePartnershipUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_IncreaseDecreaseInFairValueOfDerivativesNet" abstract="false" name="IncreaseDecreaseInFairValueOfDerivativesNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_ReportableSegmentMember" abstract="true" name="ReportableSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_OtherGeographicRegionMember" abstract="true" name="OtherGeographicRegionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_ProductAndServiceRetailMember" abstract="true" name="ProductAndServiceRetailMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_ProductAndServiceIndustrialMember" abstract="true" name="ProductAndServiceIndustrialMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_AssetsExcludingLongLivedAssets" abstract="false" name="AssetsExcludingLongLivedAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="o_TenantImprovementsRecurringCapitalExpendituresAndBuildingImprovementsMember" abstract="true" name="TenantImprovementsRecurringCapitalExpendituresAndBuildingImprovementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_MezzanineLoanMember" abstract="true" name="MezzanineLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_GuarantorObligationOptionToExtendNumber" abstract="false" name="GuarantorObligationOptionToExtendNumber" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="o_GuarantorObligationOptionToExtendPeriod" abstract="false" name="GuarantorObligationOptionToExtendPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="o_USCommercialPaperMember" abstract="true" name="USCommercialPaperMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_EuropeanCommercialPaperMember" abstract="true" name="EuropeanCommercialPaperMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_A3.625SeniorUnsecuredNotesDueJuly2032Member" abstract="true" name="A3.625SeniorUnsecuredNotesDueJuly2032Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="o_DebtInstrumentNumberOfTranches" abstract="false" name="DebtInstrumentNumberOfTranches" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="o_DebtInstrumentExtensionOptionTerm" abstract="false" name="DebtInstrumentExtensionOptionTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="o_DebtInstrumentAllInDrawnPricingPercentage" abstract="false" name="DebtInstrumentAllInDrawnPricingPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="o_DebtInstrumentAllInDrawnPricingReductionPercentage" abstract="false" name="DebtInstrumentAllInDrawnPricingReductionPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="o_SaleOfStockExpectedConsiderationOnTransaction" abstract="false" name="SaleOfStockExpectedConsiderationOnTransaction" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
