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  <xs:element name="ScheduleOfMovementsInTelesatLightspeedFinancingWarrantsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ScheduleOfMovementsInTelesatLightspeedFinancingWarrantsAbstract"/>
  <xs:element name="ScheduleOfExpensesIncludedOnTheCondensedConsolidatedStatementsOfIncomeLossAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ScheduleOfExpensesIncludedOnTheCondensedConsolidatedStatementsOfIncomeLossAbstract"/>
  <xs:element name="ScheduleOfBalanceSheetObligationsDistributedBetweenPensionAndOtherPostEmploymentBenefitsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ScheduleOfBalanceSheetObligationsDistributedBetweenPensionAndOtherPostEmploymentBenefitsAbstract"/>
  <xs:element name="ScheduleOfReconciliationOfTheLiabilitiesArisingFromFinancingActivitiesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ScheduleOfReconciliationOfTheLiabilitiesArisingFromFinancingActivitiesAbstract"/>
  <xs:element name="ScheduleOfOffBalanceSheetContractualObligationsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ScheduleOfOffBalanceSheetContractualObligationsAbstract"/>
  <xs:element name="TelesatGeoFinancingAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_TelesatGeoFinancingAbstract"/>
  <xs:element name="TelesatLightspeedFinancingAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_TelesatLightspeedFinancingAbstract"/>
  <xs:element name="TelesatPublicSharesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_TelesatPublicSharesAbstract"/>
  <xs:element name="EffectOfDilutedSecuritiesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_EffectOfDilutedSecuritiesAbstract"/>
  <xs:element name="StockIssuedDuringPeriodValueOfExchangeOfLimitedPartnershipUnitsForPublicShares" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_StockIssuedDuringPeriodValueOfExchangeOfLimitedPartnershipUnitsForPublicShares"/>
  <xs:element name="SharebasedCompensationNetOfTaxexpense" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_SharebasedCompensationNetOfTaxexpense"/>
  <xs:element name="AdjustmentsforDeferredRevenueAmortization" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_AdjustmentsforDeferredRevenueAmortization"/>
  <xs:element name="AdjustmentsforPensionExpense" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_AdjustmentsforPensionExpense"/>
  <xs:element name="AdjustmentsForDecreaseIncreaseInOperatingAssetsAndLiabilities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_AdjustmentsForDecreaseIncreaseInOperatingAssetsAndLiabilities"/>
  <xs:element name="CashPaymentsRelatedToSatellitePrograms" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_CashPaymentsRelatedToSatellitePrograms"/>
  <xs:element name="SatellitePerformancesIncentivePayment" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_SatellitePerformancesIncentivePayment"/>
  <xs:element name="TaxWithholdingsOnSettlementOfRestrictedAndPerformanceShare" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_TaxWithholdingsOnSettlementOfRestrictedAndPerformanceShare"/>
  <xs:element name="DisclosureOfScheduleOfEquipmentSalesTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_DisclosureOfScheduleOfEquipmentSalesTableTextBlock"/>
  <xs:element name="ScheduleOfOperatingExpensesTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ScheduleOfOperatingExpensesTableTextBlock"/>
  <xs:element name="DisclosureOfInterestExpensesTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_DisclosureOfInterestExpensesTextBlock"/>
  <xs:element name="DisclosureOfOtherOperatingGainsLossesNetTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_DisclosureOfOtherOperatingGainsLossesNetTableTextBlock"/>
  <xs:element name="ScheduleOfReconciliationOfTheStatutoryIncomeTaxRateTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ScheduleOfReconciliationOfTheStatutoryIncomeTaxRateTableTextBlock"/>
  <xs:element name="ScheduleOfActivityInDeferredFinancingChargesTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ScheduleOfActivityInDeferredFinancingChargesTableTextBlock"/>
  <xs:element name="ScheduleOfNumberOfSharesAndStatedValueOfOutstandingShares" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ScheduleOfNumberOfSharesAndStatedValueOfOutstandingShares"/>
  <xs:element name="ShareCapitalTablesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_ShareCapitalTablesTable"/>
  <xs:element name="ScheduleOfNumberOfRestrictedShareUnitsOutstandingTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ScheduleOfNumberOfRestrictedShareUnitsOutstandingTextBlock"/>
  <xs:element name="DisclosureOfCapitalTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_DisclosureOfCapitalTextBlock"/>
  <xs:element name="DisclosureOfDetailedInformationAboutInterestPayableAndInterestPaymentsExplanatory" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_DisclosureOfDetailedInformationAboutInterestPayableAndInterestPaymentsExplanatory"/>
  <xs:element name="DisclosureOfDetailedInformationAboutRatesUsedTtCalculateFairValueOfIndebtednessExplanatory" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_DisclosureOfDetailedInformationAboutRatesUsedTtCalculateFairValueOfIndebtednessExplanatory"/>
  <xs:element name="DisclosureofFairValueMovementsinTelesatLightspeedFinancingWarrantsExplantoryl" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_DisclosureofFairValueMovementsinTelesatLightspeedFinancingWarrantsExplantoryl"/>
  <xs:element name="DisclosureOfIncomeTaxesPaidNetOfIncomeTaxesReceivedExplanatory" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_DisclosureOfIncomeTaxesPaidNetOfIncomeTaxesReceivedExplanatory"/>
  <xs:element name="ScheduleOfInterestPaidNetOfInterestReceivedTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ScheduleOfInterestPaidNetOfInterestReceivedTableTextBlock"/>
  <xs:element name="DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesExplanatoryTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesExplanatoryTableTextBlock"/>
  <xs:element name="DisclosureOfDetailedInformationAboutNetChangeInOperatingAssetsAndLiabilitiesExplanatoryTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_DisclosureOfDetailedInformationAboutNetChangeInOperatingAssetsAndLiabilitiesExplanatoryTableTextBlock"/>
  <xs:element name="DisclosureOfDetailedInformationAboutNoncashInvestingAndFinancingActivitiesExplanatoryTableTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_DisclosureOfDetailedInformationAboutNoncashInvestingAndFinancingActivitiesExplanatoryTableTextBlock"/>
  <xs:element name="SegmentInformationScheduleofCODMandtheReconciliationThereoftotheNetIncomeLossDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_SegmentInformationScheduleofCODMandtheReconciliationThereoftotheNetIncomeLossDetailsTable"/>
  <xs:element name="OperatingExpensesNetOfSharebasedCompensationAndNonrecurringItems" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_OperatingExpensesNetOfSharebasedCompensationAndNonrecurringItems"/>
  <xs:element name="AdjustedEarningsBeforeInterestTaxesDepreciationandAmortization" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_AdjustedEarningsBeforeInterestTaxesDepreciationandAmortization"/>
  <xs:element name="NonrecurringItems" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_NonrecurringItems"/>
  <xs:element name="CapitalExpenditures" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_CapitalExpenditures"/>
  <xs:element name="SegmentInformationScheduleofEquipmentSalesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_SegmentInformationScheduleofEquipmentSalesDetailsTable"/>
  <xs:element name="SegmentInformationScheduleofGeographicRegionsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_SegmentInformationScheduleofGeographicRegionsDetailsTable"/>
  <xs:element name="CostOfThirdpartySatellites" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_CostOfThirdpartySatellites"/>
  <xs:element name="InterestOnSignificantFinancingComponent" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_InterestOnSignificantFinancingComponent"/>
  <xs:element name="InterestOnSatellitePerformanceIncentivePayments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_InterestOnSatellitePerformanceIncentivePayments"/>
  <xs:element name="InterestOnEmployeeBenefitPlans" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_InterestOnEmployeeBenefitPlans"/>
  <xs:element name="InterestOnCapitalizedInterest" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_InterestOnCapitalizedInterest"/>
  <xs:element name="InsuranceProceedsAndOther" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_InsuranceProceedsAndOther"/>
  <xs:element name="StatutoryIncomeTaxRate" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_StatutoryIncomeTaxRate"/>
  <xs:element name="IncomeTaxRecordedAtRatesDifferentFromCanadianTaxRate" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_IncomeTaxRecordedAtRatesDifferentFromCanadianTaxRate"/>
  <xs:element name="DeferredTaxExpenseIncomeRelatedToPermanentDifferences" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_DeferredTaxExpenseIncomeRelatedToPermanentDifferences"/>
  <xs:element name="ImpactOfForeignExchange" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_ImpactOfForeignExchange"/>
  <xs:element name="EffectiveIncomeTaxRate" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_EffectiveIncomeTaxRate"/>
  <xs:element name="LeaseLiabilitiesScheduleofExpectedUndiscountedContractualCashFlowsoftheLeaseLiabilitiesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_LeaseLiabilitiesScheduleofExpectedUndiscountedContractualCashFlowsoftheLeaseLiabilitiesDetailsTable"/>
  <xs:element name="DebtInstrumentsDomainDomain" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_DebtInstrumentsDomainDomain"/>
  <xs:element name="IndebtednessScheduleofIndebtednessDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_IndebtednessScheduleofIndebtednessDetailsTable"/>
  <xs:element name="BorrowingsBeforeDeferredFinancingCosts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_BorrowingsBeforeDeferredFinancingCosts"/>
  <xs:element name="DeferredFinancingCostsPrepaymentOptionAndLossOnRepayment" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_DeferredFinancingCostsPrepaymentOptionAndLossOnRepayment"/>
  <xs:element name="IndebtednessScheduleofIndebtednessParentheticalsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_IndebtednessScheduleofIndebtednessParentheticalsDetailsTable"/>
  <xs:element name="PaymentOfTermLoan" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_PaymentOfTermLoan"/>
  <xs:element name="SeniorNotesAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_SeniorNotesAmount"/>
  <xs:element name="PaymentsOfOptionsSeniorSecuredNotes" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_PaymentsOfOptionsSeniorSecuredNotes"/>
  <xs:element name="IndebtednessScheduleofActivityinDeferredFinancingChargesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_IndebtednessScheduleofActivityinDeferredFinancingChargesDetailsTable"/>
  <xs:element name="DeferredFinancingChargesBalance" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_DeferredFinancingChargesBalance"/>
  <xs:element name="TransferredToDebtIssueCosts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_TransferredToDebtIssueCosts"/>
  <xs:element name="ShareCapitalScheduleofNumberofSharesandStatedValueoftheOutstandingSharesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_ShareCapitalScheduleofNumberofSharesandStatedValueoftheOutstandingSharesDetailsTable"/>
  <xs:element name="BreakDownOfTelesatPublicShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_BreakDownOfTelesatPublicShares"/>
  <xs:element name="ShareBasedCompensationPlansScheduleofNumberofTimeVestingStockOptionsOutstandingandtheirWeightedAverageExercisePriceDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_ShareBasedCompensationPlansScheduleofNumberofTimeVestingStockOptionsOutstandingandtheirWeightedAverageExercisePriceDetailsTable"/>
  <xs:element name="ShareBasedCompensationPlansScheduleofMovementinShareUnitsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_ShareBasedCompensationPlansScheduleofMovementinShareUnitsDetailsTable"/>
  <xs:element name="RestrictedShareUnitsWithTimeCriteriaOutstanding" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="tsat_RestrictedShareUnitsWithTimeCriteriaOutstanding"/>
  <xs:element name="PSUsWithTimeAndPerformanceCriteria" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="tsat_PSUsWithTimeAndPerformanceCriteria"/>
  <xs:element name="DeferreddStockUnits" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="tsat_DeferreddStockUnits"/>
  <xs:element name="RestrictedShareUnitsWithTimeCriteriaGranted" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_RestrictedShareUnitsWithTimeCriteriaGranted"/>
  <xs:element name="PSUsWithTimeAndPerformanceCriteriaGranteds" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_PSUsWithTimeAndPerformanceCriteriaGranteds"/>
  <xs:element name="DeferredStockGranted" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_DeferredStockGranted"/>
  <xs:element name="NumberOfInstrumentsOtherEquityInstrumentssettled" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_NumberOfInstrumentsOtherEquityInstrumentssettled"/>
  <xs:element name="PSUsWithTimeAndPerformanceCriteriaSettled" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_PSUsWithTimeAndPerformanceCriteriaSettled"/>
  <xs:element name="DeferredStockSettled" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_DeferredStockSettled"/>
  <xs:element name="EffectOfDilutedSecurities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_EffectOfDilutedSecurities"/>
  <xs:element name="EarningsPerShareScheduleofReconciliationsoftheDenominatorsoftheBasicandDilutedPerShareDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_EarningsPerShareScheduleofReconciliationsoftheDenominatorsoftheBasicandDilutedPerShareDetailsTable"/>
  <xs:element name="ShareholdersEquityexcludingReserves" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_ShareholdersEquityexcludingReserves"/>
  <xs:element name="DebtFinancingexcludingDeferredFinancingCostsPrepaymentOptionsAndLossOnRepayments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_DebtFinancingexcludingDeferredFinancingCostsPrepaymentOptionsAndLossOnRepayments"/>
  <xs:element name="FinancialInstrumentsScheduleofMaturityofFinancialAssetsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_FinancialInstrumentsScheduleofMaturityofFinancialAssetsDetailsTable"/>
  <xs:element name="DeferredReceivable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_DeferredReceivable"/>
  <xs:element name="FinancialInstrumentsScheduleofContractualMaturitiesofFinancialLiabilitiesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_FinancialInstrumentsScheduleofContractualMaturitiesofFinancialLiabilitiesDetailsTable"/>
  <xs:element name="FinancialInstrumentsScheduleofInterestPayableandInterestPaymentsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_FinancialInstrumentsScheduleofInterestPayableandInterestPaymentsDetailsTable"/>
  <xs:element name="InterestPayments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_InterestPayments"/>
  <xs:element name="FinancialInstrumentsScheduleofFinancialAssetsandFinancialLiabilitiesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_FinancialInstrumentsScheduleofFinancialAssetsandFinancialLiabilitiesDetailsTable"/>
  <xs:element name="FinancialInstrumentsScheduleofPercentageofFaceValueoftheIndebtednessDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_FinancialInstrumentsScheduleofPercentageofFaceValueoftheIndebtednessDetailsTable"/>
  <xs:element name="Percentageoffairvalueindebtedness" type="dtr:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="tsat_Percentageoffairvalueindebtedness"/>
  <xs:element name="WarrantsDomainDomain" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_WarrantsDomainDomain"/>
  <xs:element name="FinancialInstrumentsScheduleofMovementsinTelesatLightspeedFinancingWarrantsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_FinancialInstrumentsScheduleofMovementsinTelesatLightspeedFinancingWarrantsDetailsTable"/>
  <xs:element name="ChangeInFairValueOfFinancingWarrants" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_ChangeInFairValueOfFinancingWarrants"/>
  <xs:element name="EmployeeBenefitPlansScheduleofExpensesIncludedontheCondensedConsolidatedStatementsofIncomeLossDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_EmployeeBenefitPlansScheduleofExpensesIncludedontheCondensedConsolidatedStatementsofIncomeLossDetailsTable"/>
  <xs:element name="EmployeeBenefitPlansScheduleofBalanceSheetObligationsDistributedBetweenPensionandOtherPostEmploymentBenefitsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_EmployeeBenefitPlansScheduleofBalanceSheetObligationsDistributedBetweenPensionandOtherPostEmploymentBenefitsDetailsTable"/>
  <xs:element name="OthersNoncurrentFinancialLiabilities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_OthersNoncurrentFinancialLiabilities"/>
  <xs:element name="OthersNoncurrentAssets" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_OthersNoncurrentAssets"/>
  <xs:element name="IncomeTaxePaid" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_IncomeTaxePaid"/>
  <xs:element name="IncomeTaxesReceived" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_IncomeTaxesReceived"/>
  <xs:element name="InterestPaidNetOfInterestReceived" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_InterestPaidNetOfInterestReceived"/>
  <xs:element name="SupplementalCashFlowInformationScheduleofReconciliationoftheLiabilitiesarisingfromFinancingActivitiesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_SupplementalCashFlowInformationScheduleofReconciliationoftheLiabilitiesarisingfromFinancingActivitiesDetailsTable"/>
  <xs:element name="InflowsOfCashFromFinancingActivities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_InflowsOfCashFromFinancingActivities"/>
  <xs:element name="OutflowsOfCashFromFinancingActivities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_OutflowsOfCashFromFinancingActivities"/>
  <xs:element name="AmortizationOfDeferredFinancingCostsPrepaymentOptionsAndLossOnRepayment" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_AmortizationOfDeferredFinancingCostsPrepaymentOptionsAndLossOnRepayment"/>
  <xs:element name="InterestAccrued" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_InterestAccrued"/>
  <xs:element name="NoncashTransferFromDeferredChargesToIndebtednessOfDebtIssueCostsAndWarrants" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_NoncashTransferFromDeferredChargesToIndebtednessOfDebtIssueCostsAndWarrants"/>
  <xs:element name="NoncashAdditions" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_NoncashAdditions"/>
  <xs:element name="NoncashTransfersFromFinancingActivities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_NoncashTransfersFromFinancingActivities"/>
  <xs:element name="NoncashActivitiesRelatedToSatellitesPropertyAndOtherEquipment" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_NoncashActivitiesRelatedToSatellitesPropertyAndOtherEquipment"/>
  <xs:element name="CommitmentsandContingentLiabilitiesScheduleofOffBalanceSheetContractualObligationsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_CommitmentsandContingentLiabilitiesScheduleofOffBalanceSheetContractualObligationsDetailsTable"/>
  <xs:element name="LiquidityDomainDomain" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_LiquidityDomainDomain"/>
  <xs:element name="BasisofPresentationandGoingConcernDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_BasisofPresentationandGoingConcernDetailsTable"/>
  <xs:element name="SegmentInformationDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_SegmentInformationDetailsTable"/>
  <xs:element name="NumberOfOperatingsSegment" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_NumberOfOperatingsSegment"/>
  <xs:element name="OtherOperatingGainsLossesNetDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_OtherOperatingGainsLossesNetDetailsTable"/>
  <xs:element name="GoodwillandIntangibleAssetsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_GoodwillandIntangibleAssetsDetailsTable"/>
  <xs:element name="PercentageOfDiscountRateOfGoodwillImpairment" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_PercentageOfDiscountRateOfGoodwillImpairment"/>
  <xs:element name="SaleOfStockDomainDomain" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_SaleOfStockDomainDomain"/>
  <xs:element name="IndebtednessDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_IndebtednessDetailsTable"/>
  <xs:element name="RevolvingCreditFacility" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_RevolvingCreditFacility"/>
  <xs:element name="CreditsExposure" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="tsat_CreditsExposure"/>
  <xs:element name="BorrowingsMaturityDateDescription" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_BorrowingsMaturityDateDescription"/>
  <xs:element name="RepurchasedPrincipalAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_RepurchasedPrincipalAmount"/>
  <xs:element name="RepurchaseOfPrincipalAmount" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_RepurchaseOfPrincipalAmount"/>
  <xs:element name="FormerSeniorSecuredCreditFacilitiesDescription" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_FormerSeniorSecuredCreditFacilitiesDescription"/>
  <xs:element name="ShareCapitalDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_ShareCapitalDetailsTable"/>
  <xs:element name="CommonStocksVotingRights" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_CommonStocksVotingRights"/>
  <xs:element name="SettlementOfRestrictedStockUnit" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_SettlementOfRestrictedStockUnit"/>
  <xs:element name="SettlementOfPublicShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_SettlementOfPublicShares"/>
  <xs:element name="PerformanceShareUnits" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_PerformanceShareUnits"/>
  <xs:element name="NonControllingInterestDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_NonControllingInterestDetailsTable"/>
  <xs:element name="ShareBasedCompensationPlansDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_ShareBasedCompensationPlansDetailsTable"/>
  <xs:element name="GovernmentGrantDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_GovernmentGrantDetailsTable"/>
  <xs:element name="NonrefundableGovernmentContributionValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_NonrefundableGovernmentContributionValue"/>
  <xs:element name="RecordedRelatingToAgreement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_RecordedRelatingToAgreement"/>
  <xs:element name="FinancialInstrumentsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_FinancialInstrumentsDetailsTable"/>
  <xs:element name="TradeAndOtherCurrentReceivablesAllowanceForDoubtfulAccounts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_TradeAndOtherCurrentReceivablesAllowanceForDoubtfulAccounts"/>
  <xs:element name="BorrowingsBeforeDeferredFinancingCost" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_BorrowingsBeforeDeferredFinancingCost"/>
  <xs:element name="DeferredCharges" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_DeferredCharges"/>
  <xs:element name="NetIncreaseIncomeImpactOf5PercentIncreaseDecrease" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_NetIncreaseIncomeImpactOf5PercentIncreaseDecrease"/>
  <xs:element name="OtherComprehensiveIncomeLossImpactOf5PercentIncreaseDecrease" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="tsat_OtherComprehensiveIncomeLossImpactOf5PercentIncreaseDecrease"/>
  <xs:element name="ShortTermInvestmentClassifiedAsCashEquivalents" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_ShortTermInvestmentClassifiedAsCashEquivalents"/>
  <xs:element name="CommitmentsandContingentLiabilitiesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="tsat_CommitmentsandContingentLiabilitiesDetailsTable"/>
  <xs:element name="InterestAndPenalties" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="tsat_InterestAndPenalties"/>
  <xs:element name="DebtInstrumentsAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem" id="tsat_DebtInstrumentsAxis"/>
  <xs:element name="LiquidityAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem" id="tsat_LiquidityAxis"/>
  <xs:element name="SaleOfStockAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem" id="tsat_SaleOfStockAxis"/>
  <xs:element name="WarrantsAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem" id="tsat_WarrantsAxis"/>
  <xs:element name="AllOthersMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_AllOthersMember"/>
  <xs:element name="AsiaAustraliaMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_AsiaAustraliaMember"/>
  <xs:element name="BroadcastMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_BroadcastMember"/>
  <xs:element name="CapitalCommitmentsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_CapitalCommitmentsMember"/>
  <xs:element name="CarryingAmount1Member" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_CarryingAmount1Member"/>
  <xs:element name="ClassACommonSharesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ClassACommonSharesMember"/>
  <xs:element name="ClassALimitedPartnershipUnitsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ClassALimitedPartnershipUnitsMember"/>
  <xs:element name="ClassBCommonSharesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ClassBCommonSharesMember"/>
  <xs:element name="ClassBLPUnitsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ClassBLPUnitsMember"/>
  <xs:element name="ClassBVariableVotingSharesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ClassBVariableVotingSharesMember"/>
  <xs:element name="ClassCCommonSharesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ClassCCommonSharesMember"/>
  <xs:element name="ClassCLPUnitsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ClassCLPUnitsMember"/>
  <xs:element name="ConsultingAndOtherMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ConsultingAndOtherMember"/>
  <xs:element name="ContractualCashFlowsundiscountedMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ContractualCashFlowsundiscountedMember"/>
  <xs:element name="CustomerAndOtherDepositsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_CustomerAndOtherDepositsMember"/>
  <xs:element name="DebtIssueCostsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_DebtIssueCostsMember"/>
  <xs:element name="DeferredShareUnitsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_DeferredShareUnitsMember"/>
  <xs:element name="DerivativeLiabilitiesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_DerivativeLiabilitiesMember"/>
  <xs:element name="EnterpriseMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_EnterpriseMember"/>
  <xs:element name="EuropeMiddleEastAfricaMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_EuropeMiddleEastAfricaMember"/>
  <xs:element name="GEOMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_GEOMember"/>
  <xs:element name="GeoMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_GeoMember"/>
  <xs:element name="GoldenShareMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_GoldenShareMember"/>
  <xs:element name="GovernmentOfCanadaMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_GovernmentOfCanadaMember"/>
  <xs:element name="GovernmentOfCanadaTelesatLightspeedFinancingMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_GovernmentOfCanadaTelesatLightspeedFinancingMember"/>
  <xs:element name="GovernmentOfQuebecMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_GovernmentOfQuebecMember"/>
  <xs:element name="GovernmentOfQuebecTelesatLightspeedFinancingMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_GovernmentOfQuebecTelesatLightspeedFinancingMember"/>
  <xs:element name="HistoricPlanMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_HistoricPlanMember"/>
  <xs:element name="IndebtednessMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_IndebtednessMember"/>
  <xs:element name="InterestRatesFloorMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_InterestRatesFloorMember"/>
  <xs:element name="InternationalCustomersMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_InternationalCustomersMember"/>
  <xs:element name="LEOMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_LEOMember"/>
  <xs:element name="LatinAmericaCaribbeanMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_LatinAmericaCaribbeanMember"/>
  <xs:element name="LeoMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_LeoMember"/>
  <xs:element name="LimitedPartnershipUnitsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_LimitedPartnershipUnitsMember"/>
  <xs:element name="NorthAmericanMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_NorthAmericanMember"/>
  <xs:element name="OmnibusPlanMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_OmnibusPlanMember"/>
  <xs:element name="OneSignificantCustomersMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_OneSignificantCustomersMember"/>
  <xs:element name="OperatingExpensesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_OperatingExpensesMember"/>
  <xs:element name="OtherFinancialLiabilitiesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_OtherFinancialLiabilitiesMember"/>
  <xs:element name="OtherMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_OtherMember"/>
  <xs:element name="OtherOperatingCommitmentsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_OtherOperatingCommitmentsMember"/>
  <xs:element name="OtherPostemploymentBenefitPlansCanadianMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_OtherPostemploymentBenefitPlansCanadianMember"/>
  <xs:element name="OtherPostemploymentBenefitPlansTotalMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_OtherPostemploymentBenefitPlansTotalMember"/>
  <xs:element name="OtherPostemploymentBenefitPlansUSMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_OtherPostemploymentBenefitPlansUSMember"/>
  <xs:element name="PSPMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_PSPMember"/>
  <xs:element name="PensionPlansCanadianMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_PensionPlansCanadianMember"/>
  <xs:element name="PensionPlansTotalMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_PensionPlansTotalMember"/>
  <xs:element name="PensionPlansUSMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_PensionPlansUSMember"/>
  <xs:element name="PerformanceShareUnitsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_PerformanceShareUnitsMember"/>
  <xs:element name="PerformanceVestingOptionPlansMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_PerformanceVestingOptionPlansMember"/>
  <xs:element name="PrivatePlacementsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_PrivatePlacementsMember"/>
  <xs:element name="PropertyLeasesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_PropertyLeasesMember"/>
  <xs:element name="RSUSWithTimeAndPerformanceCriteriaMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_RSUSWithTimeAndPerformanceCriteriaMember"/>
  <xs:element name="RSUsDSUsAndPSUsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_RSUsDSUsAndPSUsMember"/>
  <xs:element name="RSUsWithTimeCriteriaMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_RSUsWithTimeCriteriaMember"/>
  <xs:element name="SatellitePerformanceIncentivePaymentsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_SatellitePerformanceIncentivePaymentsMember"/>
  <xs:element name="SatellitesPropertyAndOtherEquipmentMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_SatellitesPropertyAndOtherEquipmentMember"/>
  <xs:element name="SeniorSecuredCreditFacilitiesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_SeniorSecuredCreditFacilitiesMember"/>
  <xs:element name="SeniorSecuredNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_SeniorSecuredNotesMember"/>
  <xs:element name="SeniorUnsecuredNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_SeniorUnsecuredNotesMember"/>
  <xs:element name="SixPointFivePercentSeniorNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_SixPointFivePercentSeniorNotesMember"/>
  <xs:element name="TelesatGEOFinancingMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_TelesatGEOFinancingMember"/>
  <xs:element name="TelesatGEOMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_TelesatGEOMember"/>
  <xs:element name="TelesatLightspeedFinancingMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_TelesatLightspeedFinancingMember"/>
  <xs:element name="TelesatLightspeedFinancingWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_TelesatLightspeedFinancingWarrantsMember"/>
  <xs:element name="TelesatLightspeedWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_TelesatLightspeedWarrantsMember"/>
  <xs:element name="TelesatPublicSharesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_TelesatPublicSharesMember"/>
  <xs:element name="TermLoanBUSFacilityMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_TermLoanBUSFacilityMember"/>
  <xs:element name="TimeVestingOptionPlansMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_TimeVestingOptionPlansMember"/>
  <xs:element name="TotalDeferredFinancingChargesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_TotalDeferredFinancingChargesMember"/>
  <xs:element name="TowThousandAndTwentySevenSeniorSecuredNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_TowThousandAndTwentySevenSeniorSecuredNotesMember"/>
  <xs:element name="TradeAndOtherPayablesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_TradeAndOtherPayablesMember"/>
  <xs:element name="TwoSignificantCustomersMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_TwoSignificantCustomersMember"/>
  <xs:element name="TwoThousandAndTwentySevenSeniorUnsecuredNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_TwoThousandAndTwentySevenSeniorUnsecuredNotesMember"/>
  <xs:element name="TwoThousandAndTwentySixSeniorSecuredNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_TwoThousandAndTwentySixSeniorSecuredNotesMember"/>
  <xs:element name="TwoThousandTwentySevenSeniorSecuredNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_TwoThousandTwentySevenSeniorSecuredNotesMember"/>
  <xs:element name="TwoThousandTwentySevenSeniorUnsecuredNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_TwoThousandTwentySevenSeniorUnsecuredNotesMember"/>
  <xs:element name="TwoThousandTwentySixSeniorSecuredNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_TwoThousandTwentySixSeniorSecuredNotesMember"/>
  <xs:element name="BasisOfPresentationAndGoingConcernLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_BasisOfPresentationAndGoingConcernLineItems"/>
  <xs:element name="CapitalDisclosuresAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_CapitalDisclosuresAbstract"/>
  <xs:element name="CommitmentsAndContingentLiabilitiesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_CommitmentsAndContingentLiabilitiesLineItems"/>
  <xs:element name="ContractualObligationsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ContractualObligationsLineItems"/>
  <xs:element name="DeferredFinancingChargesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_DeferredFinancingChargesLineItems"/>
  <xs:element name="GovernmentGrantAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_GovernmentGrantAbstract"/>
  <xs:element name="GovernmentGrantLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_GovernmentGrantLineItems"/>
  <xs:element name="IndebtednessLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_IndebtednessLineItems"/>
  <xs:element name="NonControllingInterestAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_NonControllingInterestAbstract"/>
  <xs:element name="NonControllingInterestLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_NonControllingInterestLineItems"/>
  <xs:element name="OtherOperatingGainsLossesNetLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_OtherOperatingGainsLossesNetLineItems"/>
  <xs:element name="ScheduleOfInterestPaidNetOfInterestReceivedAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ScheduleOfInterestPaidNetOfInterestReceivedAbstract"/>
  <xs:element name="ScheduleOfMovementsInTelesatLightspeedFinancingWarrantsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ScheduleOfMovementsInTelesatLightspeedFinancingWarrantsLineItems"/>
  <xs:element name="ScheduleOfNonCashInvestingActivitiesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ScheduleOfNonCashInvestingActivitiesAbstract"/>
  <xs:element name="ScheduleOfReconciliationOfTheLiabilitiesArisingFromFinancingActivitiesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_ScheduleOfReconciliationOfTheLiabilitiesArisingFromFinancingActivitiesLineItems"/>
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  <xs:element name="DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="tsat_DocumentAndEntityInformationAbstract"/>
</xs:schema>
