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    <link:loc xlink:type="locator" xlink:href="sify-20260331.xsd#sify_CurrentCapitalCreditors" xlink:label="sify_CurrentCapitalCreditors" xlink:title="sify_CurrentCapitalCreditors" />
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    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_OtherCurrentFinancialLiabilities" xlink:to="sify_CurrentInterestAccruedButNotDueOnBorrowings" xlink:title="Calculation : ifrs-full_OtherCurrentFinancialLiabilities to sify_CurrentInterestAccruedButNotDueOnBorrowings" order="1" weight="1" />
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    <link:loc xlink:type="locator" xlink:href="sify-20260331.xsd#sify_CurrentPrepaymentsForPurchaseOfBandwidth" xlink:label="sify_CurrentPrepaymentsForPurchaseOfBandwidth" xlink:title="sify_CurrentPrepaymentsForPurchaseOfBandwidth" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_CurrentPrepayments" xlink:to="sify_CurrentPrepaymentsForPurchaseOfBandwidth" xlink:title="Calculation : ifrs-full_CurrentPrepayments to sify_CurrentPrepaymentsForPurchaseOfBandwidth" order="0" weight="1" />
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    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_NoncurrentReceivables" xlink:to="ifrs-full_NoncurrentPrepayments" xlink:title="Calculation : ifrs-full_NoncurrentReceivables to ifrs-full_NoncurrentPrepayments" order="0" weight="1" use="optional" />
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  <link:calculationLink xlink:type="extended" xlink:role="http://corporate.sify.com/role/OthercurrentnonfinancialassetsDetails">
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    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_OtherCurrentNonfinancialAssets" xlink:to="ifrs-full_CurrentReceivablesFromTaxesOtherThanIncomeTax" xlink:title="Calculation : ifrs-full_OtherCurrentNonfinancialAssets to ifrs-full_CurrentReceivablesFromTaxesOtherThanIncomeTax" order="1" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherCurrentReceivables" xlink:label="ifrs-full_OtherCurrentReceivables" xlink:title="ifrs-full_OtherCurrentReceivables" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_OtherCurrentNonfinancialAssets" xlink:to="ifrs-full_OtherCurrentReceivables" xlink:title="Calculation : ifrs-full_OtherCurrentNonfinancialAssets to ifrs-full_OtherCurrentReceivables" order="2" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="sify-20260331.xsd#sify_CurrentAssetsRecognisedFromCostsToObtainOrFulfilContractsWithCustomers" xlink:label="sify_CurrentAssetsRecognisedFromCostsToObtainOrFulfilContractsWithCustomers" xlink:title="sify_CurrentAssetsRecognisedFromCostsToObtainOrFulfilContractsWithCustomers" />
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  <link:calculationLink xlink:type="extended" xlink:role="http://corporate.sify.com/role/OthernoncurrentnonfinancialliabilitiesDetails">
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    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_OtherNoncurrentNonfinancialLiabilities" xlink:to="ifrs-full_NoncurrentContractLiabilities" xlink:title="Calculation : ifrs-full_OtherNoncurrentNonfinancialLiabilities to ifrs-full_NoncurrentContractLiabilities" order="0" weight="1" use="optional" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RightofuseAssets" xlink:label="ifrs-full_RightofuseAssets" xlink:title="ifrs-full_RightofuseAssets" />
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    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_NoncurrentAssets" xlink:to="ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:title="Calculation : ifrs-full_NoncurrentAssets to ifrs-full_IntangibleAssetsOtherThanGoodwill" order="2" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod" xlink:label="ifrs-full_NoncurrentInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod" xlink:title="ifrs-full_NoncurrentInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherNoncurrentNonfinancialAssets" xlink:label="ifrs-full_OtherNoncurrentNonfinancialAssets" xlink:title="ifrs-full_OtherNoncurrentNonfinancialAssets" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashAndCashEquivalents" xlink:label="ifrs-full_CashAndCashEquivalents" xlink:title="ifrs-full_CashAndCashEquivalents" />
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    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_CurrentLiabilities" xlink:to="ifrs-full_ShorttermBorrowings" xlink:title="Calculation : ifrs-full_CurrentLiabilities to ifrs-full_ShorttermBorrowings" order="6" weight="1" use="optional" />
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    <link:loc xlink:type="locator" xlink:href="sify-20260331.xsd#sify_SecurityDepositsCurrent" xlink:label="sify_SecurityDepositsCurrent" xlink:title="sify_SecurityDepositsCurrent" />
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    <link:loc xlink:type="locator" xlink:href="sify-20260331.xsd#sify_InterestAccruedOnInvestmentsCurrent" xlink:label="sify_InterestAccruedOnInvestmentsCurrent" xlink:title="sify_InterestAccruedOnInvestmentsCurrent" />
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    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="sify_TotalEarningsBeforeInterestTaxDepreciationAndAmortisation" xlink:to="ifrs-full_DeferredTaxExpenseIncomeRelatingToOriginationAndReversalOfTemporaryDifferences" xlink:title="Calculation : sify_TotalEarningsBeforeInterestTaxDepreciationAndAmortisation to ifrs-full_DeferredTaxExpenseIncomeRelatingToOriginationAndReversalOfTemporaryDifferences" order="4" weight="-1" use="optional" />
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    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:to="sify_ProvisionForDoubtfulDebts" xlink:title="Calculation : ifrs-full_SellingGeneralAndAdministrativeExpense to sify_ProvisionForDoubtfulDebts" order="1" weight="1" use="optional" />
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    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:to="ifrs-full_TaxExpenseOtherThanIncomeTaxExpense" xlink:title="Calculation : ifrs-full_SellingGeneralAndAdministrativeExpense to ifrs-full_TaxExpenseOtherThanIncomeTaxExpense" order="2" weight="1" use="optional" />
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    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:to="ifrs-full_TravelExpense" xlink:title="Calculation : ifrs-full_SellingGeneralAndAdministrativeExpense to ifrs-full_TravelExpense" order="3" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProfessionalFeesExpense" xlink:label="ifrs-full_ProfessionalFeesExpense" xlink:title="ifrs-full_ProfessionalFeesExpense" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:to="ifrs-full_ProfessionalFeesExpense" xlink:title="Calculation : ifrs-full_SellingGeneralAndAdministrativeExpense to ifrs-full_ProfessionalFeesExpense" order="4" weight="1" use="optional" />
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    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:to="ifrs-full_InsuranceExpense" xlink:title="Calculation : ifrs-full_SellingGeneralAndAdministrativeExpense to ifrs-full_InsuranceExpense" order="5" weight="1" use="optional" />
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    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:to="sify_RentExpenses" xlink:title="Calculation : ifrs-full_SellingGeneralAndAdministrativeExpense to sify_RentExpenses" order="6" weight="1" use="optional" />
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    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:to="ifrs-full_AdvertisingExpense" xlink:title="Calculation : ifrs-full_SellingGeneralAndAdministrativeExpense to ifrs-full_AdvertisingExpense" order="7" weight="1" use="optional" />
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    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:to="ifrs-full_OtherExpenseByNature" xlink:title="Calculation : ifrs-full_SellingGeneralAndAdministrativeExpense to ifrs-full_OtherExpenseByNature" order="8" weight="1" use="optional" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_DirectorsRemunerationExpense" xlink:label="ifrs-full_DirectorsRemunerationExpense" xlink:title="ifrs-full_DirectorsRemunerationExpense" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:to="ifrs-full_DirectorsRemunerationExpense" xlink:title="Calculation : ifrs-full_SellingGeneralAndAdministrativeExpense to ifrs-full_DirectorsRemunerationExpense" order="13" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AuditorsRemuneration" xlink:label="ifrs-full_AuditorsRemuneration" xlink:title="ifrs-full_AuditorsRemuneration" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:to="ifrs-full_AuditorsRemuneration" xlink:title="Calculation : ifrs-full_SellingGeneralAndAdministrativeExpense to ifrs-full_AuditorsRemuneration" order="14" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_MiscellaneousOtherOperatingExpense" xlink:label="ifrs-full_MiscellaneousOtherOperatingExpense" xlink:title="ifrs-full_MiscellaneousOtherOperatingExpense" />
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    <link:loc xlink:type="locator" xlink:href="sify-20260331.xsd#sify_CurrentLoansForOtherWorkingCapitalFacilitiesAndCurrentPortionOfNonCurrentLoansForOtherWorkingFacilities" xlink:label="sify_CurrentLoansForOtherWorkingCapitalFacilitiesAndCurrentPortionOfNonCurrentLoansForOtherWorkingFacilities" xlink:title="sify_CurrentLoansForOtherWorkingCapitalFacilitiesAndCurrentPortionOfNonCurrentLoansForOtherWorkingFacilities" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings" xlink:to="sify_CurrentLoansForOtherWorkingCapitalFacilitiesAndCurrentPortionOfNonCurrentLoansForOtherWorkingFacilities" xlink:title="Calculation : ifrs-full_CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings to sify_CurrentLoansForOtherWorkingCapitalFacilitiesAndCurrentPortionOfNonCurrentLoansForOtherWorkingFacilities" order="1" weight="1" />
    <link:loc xlink:type="locator" xlink:href="sify-20260331.xsd#sify_CurrentOtherShortTermBorrowings" xlink:label="sify_CurrentOtherShortTermBorrowings" xlink:title="sify_CurrentOtherShortTermBorrowings" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings" xlink:to="sify_CurrentOtherShortTermBorrowings" xlink:title="Calculation : ifrs-full_CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings to sify_CurrentOtherShortTermBorrowings" order="2" weight="1" />
    <link:loc xlink:type="locator" xlink:href="sify-20260331.xsd#sify_CurrentSupplierFinanceAarrangementsLiabilities" xlink:label="sify_CurrentSupplierFinanceAarrangementsLiabilities" xlink:title="sify_CurrentSupplierFinanceAarrangementsLiabilities" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings" xlink:to="sify_CurrentSupplierFinanceAarrangementsLiabilities" xlink:title="Calculation : ifrs-full_CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings to sify_CurrentSupplierFinanceAarrangementsLiabilities" order="3" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OtherCurrentBorrowingsAndCurrentPortionOfOtherNoncurrentBorrowings" xlink:label="ifrs-full_OtherCurrentBorrowingsAndCurrentPortionOfOtherNoncurrentBorrowings" xlink:title="ifrs-full_OtherCurrentBorrowingsAndCurrentPortionOfOtherNoncurrentBorrowings" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings" xlink:to="ifrs-full_OtherCurrentBorrowingsAndCurrentPortionOfOtherNoncurrentBorrowings" xlink:title="Calculation : ifrs-full_CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings to ifrs-full_OtherCurrentBorrowingsAndCurrentPortionOfOtherNoncurrentBorrowings" order="4" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_LongtermBorrowings" xlink:label="ifrs-full_LongtermBorrowings" xlink:title="ifrs-full_LongtermBorrowings" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentPortionOfNoncurrentSecuredBankLoansReceived" xlink:label="ifrs-full_NoncurrentPortionOfNoncurrentSecuredBankLoansReceived" xlink:title="ifrs-full_NoncurrentPortionOfNoncurrentSecuredBankLoansReceived" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_LongtermBorrowings" xlink:to="ifrs-full_NoncurrentPortionOfNoncurrentSecuredBankLoansReceived" xlink:title="Calculation : ifrs-full_LongtermBorrowings to ifrs-full_NoncurrentPortionOfNoncurrentSecuredBankLoansReceived" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NoncurrentPortionOfOtherNoncurrentBorrowings" xlink:label="ifrs-full_NoncurrentPortionOfOtherNoncurrentBorrowings" xlink:title="ifrs-full_NoncurrentPortionOfOtherNoncurrentBorrowings" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_LongtermBorrowings" xlink:to="ifrs-full_NoncurrentPortionOfOtherNoncurrentBorrowings" xlink:title="Calculation : ifrs-full_LongtermBorrowings to ifrs-full_NoncurrentPortionOfOtherNoncurrentBorrowings" order="1" weight="1" use="optional" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:title="ifrs-full_CashFlowsFromUsedInOperatingActivities" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" xlink:to="ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:title="Calculation : ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges to ifrs-full_CashFlowsFromUsedInOperatingActivities" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperations" xlink:label="ifrs-full_CashFlowsFromUsedInOperations" xlink:title="ifrs-full_CashFlowsFromUsedInOperations" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="ifrs-full_CashFlowsFromUsedInOperations" xlink:title="Calculation : ifrs-full_CashFlowsFromUsedInOperatingActivities to ifrs-full_CashFlowsFromUsedInOperations" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:label="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:title="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_CashFlowsFromUsedInOperations" xlink:to="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:title="Calculation : ifrs-full_CashFlowsFromUsedInOperations to ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ProfitLossFromOperatingActivities" xlink:label="ifrs-full_ProfitLossFromOperatingActivities" xlink:title="ifrs-full_ProfitLossFromOperatingActivities" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ifrs-full_ProfitLossFromOperatingActivities" xlink:title="Calculation : ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital to ifrs-full_ProfitLossFromOperatingActivities" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForDepreciationAndAmortisationExpenseAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" xlink:label="ifrs-full_AdjustmentsForDepreciationAndAmortisationExpenseAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" xlink:title="ifrs-full_AdjustmentsForDepreciationAndAmortisationExpenseAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ifrs-full_AdjustmentsForDepreciationAndAmortisationExpenseAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" xlink:title="Calculation : ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital to ifrs-full_AdjustmentsForDepreciationAndAmortisationExpenseAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" order="1" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment" xlink:label="ifrs-full_AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment" xlink:title="ifrs-full_AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ifrs-full_AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment" xlink:title="Calculation : ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital to ifrs-full_AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment" order="2" weight="-1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForProvisions" xlink:label="ifrs-full_AdjustmentsForProvisions" xlink:title="ifrs-full_AdjustmentsForProvisions" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ifrs-full_AdjustmentsForProvisions" xlink:title="Calculation : ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital to ifrs-full_AdjustmentsForProvisions" order="3" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForSharebasedPayments" xlink:label="ifrs-full_AdjustmentsForSharebasedPayments" xlink:title="ifrs-full_AdjustmentsForSharebasedPayments" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ifrs-full_AdjustmentsForSharebasedPayments" xlink:title="Calculation : ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital to ifrs-full_AdjustmentsForSharebasedPayments" order="4" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="sify-20260331.xsd#sify_AdjustmentsForIncomeFromLeaseTermination" xlink:label="sify_AdjustmentsForIncomeFromLeaseTermination" xlink:title="sify_AdjustmentsForIncomeFromLeaseTermination" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="sify_AdjustmentsForIncomeFromLeaseTermination" xlink:title="Calculation : ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital to sify_AdjustmentsForIncomeFromLeaseTermination" order="5" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains" xlink:label="ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains" xlink:title="ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains" xlink:title="Calculation : ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital to ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains" order="6" weight="1" use="optional" />
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    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="sify_AmortizationOfLeaseholdPrepayments" xlink:title="Calculation : ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital to sify_AmortizationOfLeaseholdPrepayments" order="7" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable" xlink:label="ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable" xlink:title="ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_CashFlowsFromUsedInOperations" xlink:to="ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable" xlink:title="Calculation : ifrs-full_CashFlowsFromUsedInOperations to ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable" order="1" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInOtherFinancialAssets" xlink:label="ifrs-full_AdjustmentsForDecreaseIncreaseInOtherFinancialAssets" xlink:title="ifrs-full_AdjustmentsForDecreaseIncreaseInOtherFinancialAssets" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_CashFlowsFromUsedInOperations" xlink:to="ifrs-full_AdjustmentsForDecreaseIncreaseInOtherFinancialAssets" xlink:title="Calculation : ifrs-full_CashFlowsFromUsedInOperations to ifrs-full_AdjustmentsForDecreaseIncreaseInOtherFinancialAssets" order="2" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInOtherAssets" xlink:label="ifrs-full_AdjustmentsForDecreaseIncreaseInOtherAssets" xlink:title="ifrs-full_AdjustmentsForDecreaseIncreaseInOtherAssets" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="ifrs-full_CashFlowsFromUsedInOperations" xlink:to="ifrs-full_AdjustmentsForDecreaseIncreaseInOtherAssets" xlink:title="Calculation : ifrs-full_CashFlowsFromUsedInOperations to ifrs-full_AdjustmentsForDecreaseIncreaseInOtherAssets" order="3" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:label="ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:title="ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" />
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