<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019ce73f-db95-77a4-8c5d-0e27983aacf3,g:50a28ca7-759f-46da-b4d7-fd74dcce0060-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="https://xbrl.org/2023/arcrole/summation-item" xlink:type="simple" xlink:href="https://www.xbrl.org/2023/calculation-1.1.xsd#summation-item"/>
  <link:roleRef roleURI="http://ouster.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS" xlink:type="simple" xlink:href="oust-20260331.xsd#CONDENSEDCONSOLIDATEDBALANCESHEETS"/>
  <link:calculationLink xlink:role="http://ouster.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019ce73f-dcf7-79e9-bb2d-2aebfdadc970" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_019ce73f-dcf7-71ff-b9b4-d00130db3d57" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019ce73f-dcf7-79e9-bb2d-2aebfdadc970" xlink:to="loc_us-gaap_LiabilitiesCurrent_019ce73f-dcf7-71ff-b9b4-d00130db3d57" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_019ce73f-dcf7-7460-88b4-5a5fac774ea2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019ce73f-dcf7-79e9-bb2d-2aebfdadc970" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_019ce73f-dcf7-7460-88b4-5a5fac774ea2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_019ce73f-dcf7-7a79-b1d3-a2dde6495f9b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiabilityNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019ce73f-dcf7-79e9-bb2d-2aebfdadc970" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_019ce73f-dcf7-7a79-b1d3-a2dde6495f9b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_019ce73f-dcf7-78e0-93e6-b201a9ff4f91" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019ce73f-dcf7-79e9-bb2d-2aebfdadc970" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_019ce73f-dcf7-78e0-93e6-b201a9ff4f91" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_019daaa2-2ec4-7280-a734-bddef870079c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019ce73f-dcf7-79e9-bb2d-2aebfdadc970" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_019daaa2-2ec4-7280-a734-bddef870079c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_019ce73f-dcf7-7ac4-a973-09ada08f105f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019ce73f-dcf7-72ae-a628-ebbed7d788ca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019ce73f-dcf7-7ac4-a973-09ada08f105f" xlink:to="loc_us-gaap_Liabilities_019ce73f-dcf7-72ae-a628-ebbed7d788ca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_019ce73f-dcf7-7d7f-8c4a-2a0495a09e04" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019ce73f-dcf7-7ac4-a973-09ada08f105f" xlink:to="loc_us-gaap_CommitmentsAndContingencies_019ce73f-dcf7-7d7f-8c4a-2a0495a09e04" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019ce73f-dcf7-7d77-9e5d-adb6844e1058" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019ce73f-dcf7-7ac4-a973-09ada08f105f" xlink:to="loc_us-gaap_StockholdersEquity_019ce73f-dcf7-7d77-9e5d-adb6844e1058" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019ce73f-dcf7-71de-8e02-ef7e54b2aaf1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_019ce73f-dcf7-7d7c-81e9-f75410e590ae" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019ce73f-dcf7-71de-8e02-ef7e54b2aaf1" xlink:to="loc_us-gaap_AssetsCurrent_019ce73f-dcf7-7d7c-81e9-f75410e590ae" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_019ce73f-dcf7-7640-986c-3257dbbf8ae8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019ce73f-dcf7-71de-8e02-ef7e54b2aaf1" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_019ce73f-dcf7-7640-986c-3257dbbf8ae8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNetNoncurrent_019ce73f-dcf7-7616-a57c-b22bcca6e9e2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerAssetNetNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019ce73f-dcf7-71de-8e02-ef7e54b2aaf1" xlink:to="loc_us-gaap_ContractWithCustomerAssetNetNoncurrent_019ce73f-dcf7-7616-a57c-b22bcca6e9e2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_019ce73f-dcf7-7b36-9f95-819b349ab48b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019ce73f-dcf7-71de-8e02-ef7e54b2aaf1" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_019ce73f-dcf7-7b36-9f95-819b349ab48b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019ce73f-dcf7-73af-be58-d0081193db3d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019ce73f-dcf7-71de-8e02-ef7e54b2aaf1" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019ce73f-dcf7-73af-be58-d0081193db3d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashNoncurrent_019ce73f-dcf7-714a-b02a-abbae3b4f757" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019ce73f-dcf7-71de-8e02-ef7e54b2aaf1" xlink:to="loc_us-gaap_RestrictedCashNoncurrent_019ce73f-dcf7-714a-b02a-abbae3b4f757" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_019ce73f-dcf7-759e-82b9-6cd6f3dab693" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019ce73f-dcf7-71de-8e02-ef7e54b2aaf1" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_019ce73f-dcf7-759e-82b9-6cd6f3dab693" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_019d4845-904c-7d91-8835-c524bde35d5b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019ce73f-dcf7-71de-8e02-ef7e54b2aaf1" xlink:to="loc_us-gaap_Goodwill_019d4845-904c-7d91-8835-c524bde35d5b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_019ce73f-dcf7-7e5f-aecf-2c6525322c14" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_019ce73f-dcf7-7c8e-a60b-2b985f1a1af7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019ce73f-dcf7-7e5f-aecf-2c6525322c14" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_019ce73f-dcf7-7c8e-a60b-2b985f1a1af7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_019ce73f-dcf7-70a4-ae4f-27938722f854" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019ce73f-dcf7-7e5f-aecf-2c6525322c14" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_019ce73f-dcf7-70a4-ae4f-27938722f854" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_019ce73f-dcf7-7a24-91e1-f56e678c5818" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019ce73f-dcf7-7e5f-aecf-2c6525322c14" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_019ce73f-dcf7-7a24-91e1-f56e678c5818" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_019ce73f-dcf7-756c-98e5-1df63d0172d5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019ce73f-dcf7-7e5f-aecf-2c6525322c14" xlink:to="loc_us-gaap_AccountsPayableCurrent_019ce73f-dcf7-756c-98e5-1df63d0172d5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019ce73f-dcf7-79c4-bbbe-85f283f80189" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_019ce73f-dcf7-7744-a0b7-d56742c4641d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019ce73f-dcf7-79c4-bbbe-85f283f80189" xlink:to="loc_us-gaap_CommonStockValue_019ce73f-dcf7-7744-a0b7-d56742c4641d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_019ce73f-dcf7-7336-a02b-d1d7202ba297" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019ce73f-dcf7-79c4-bbbe-85f283f80189" xlink:to="loc_us-gaap_AdditionalPaidInCapital_019ce73f-dcf7-7336-a02b-d1d7202ba297" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019ce73f-dcf7-70d4-9a15-65e807df5473" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019ce73f-dcf7-79c4-bbbe-85f283f80189" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019ce73f-dcf7-70d4-9a15-65e807df5473" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019ce73f-dcf7-7ed5-a992-31ca41222109" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019ce73f-dcf7-79c4-bbbe-85f283f80189" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019ce73f-dcf7-7ed5-a992-31ca41222109" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_019ce73f-dcf7-79ad-b2f9-8232eed062fe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019ce73f-dcf7-7c99-9e06-0d027764b0b6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019ce73f-dcf7-79ad-b2f9-8232eed062fe" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019ce73f-dcf7-7c99-9e06-0d027764b0b6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashCurrent_019ce73f-dcf7-7bdf-9911-42542e19378c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019ce73f-dcf7-79ad-b2f9-8232eed062fe" xlink:to="loc_us-gaap_RestrictedCashCurrent_019ce73f-dcf7-7bdf-9911-42542e19378c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermInvestments_019ce73f-dcf7-796c-ad30-98797210e1ec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShortTermInvestments"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019ce73f-dcf7-79ad-b2f9-8232eed062fe" xlink:to="loc_us-gaap_ShortTermInvestments_019ce73f-dcf7-796c-ad30-98797210e1ec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_019ce73f-dcf7-7ad5-b3e9-eaf109ff6318" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019ce73f-dcf7-79ad-b2f9-8232eed062fe" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_019ce73f-dcf7-7ad5-b3e9-eaf109ff6318" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_019ce73f-dcf7-7184-8de1-173e9e08fe89" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryNet"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019ce73f-dcf7-79ad-b2f9-8232eed062fe" xlink:to="loc_us-gaap_InventoryNet_019ce73f-dcf7-7184-8de1-173e9e08fe89" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019ce73f-dcf7-757b-9fa9-ee0134bb6c1b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019ce73f-dcf7-79ad-b2f9-8232eed062fe" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019ce73f-dcf7-757b-9fa9-ee0134bb6c1b" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ouster.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVELOSS" xlink:type="simple" xlink:href="oust-20260331.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVELOSS"/>
  <link:calculationLink xlink:role="http://ouster.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVELOSS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019ce73f-dcf8-7e11-a466-6747237221b3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019ce73f-dcf8-74c7-a557-bf4d4585af77" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019ce73f-dcf8-7e11-a466-6747237221b3" xlink:to="loc_us-gaap_OperatingIncomeLoss_019ce73f-dcf8-74c7-a557-bf4d4585af77" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_019ce73f-dcf8-72c1-8c3c-741d9cf39513" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019ce73f-dcf8-7e11-a466-6747237221b3" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_019ce73f-dcf8-72c1-8c3c-741d9cf39513" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_019ce73f-dcf8-7d9a-a745-9acef3bae433" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeInterest_019ce73f-dcf8-72fd-97a3-80f3942e9069" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentIncomeInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_019ce73f-dcf8-7d9a-a745-9acef3bae433" xlink:to="loc_us-gaap_InvestmentIncomeInterest_019ce73f-dcf8-72fd-97a3-80f3942e9069" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019ce73f-dcf8-7fcb-9024-caedcee51074" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_019ce73f-dcf8-7d9a-a745-9acef3bae433" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019ce73f-dcf8-7fcb-9024-caedcee51074" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_019ce73f-dcf8-7df0-b76d-b8987905ea4a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingExpenses"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingAndMarketingExpense_019ce73f-dcf8-76d0-b945-2fc876ca8200" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SellingAndMarketingExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_019ce73f-dcf8-7df0-b76d-b8987905ea4a" xlink:to="loc_us-gaap_SellingAndMarketingExpense_019ce73f-dcf8-76d0-b945-2fc876ca8200" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_019ce73f-dcf8-724d-9916-5fa3f2f292d5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_019ce73f-dcf8-7df0-b76d-b8987905ea4a" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_019ce73f-dcf8-724d-9916-5fa3f2f292d5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_019ce73f-dcf8-7e88-bc60-e2e7bccbb11f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_019ce73f-dcf8-7df0-b76d-b8987905ea4a" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_019ce73f-dcf8-7e88-bc60-e2e7bccbb11f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019ce73f-dcf8-713e-a6be-8a38db5d1787" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019ce73f-dcf8-7396-9df9-c55c4c32cdd6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019ce73f-dcf8-713e-a6be-8a38db5d1787" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019ce73f-dcf8-7396-9df9-c55c4c32cdd6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019ce73f-dcf8-7a2b-9e28-3ff485a2dd70" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019ce73f-dcf8-713e-a6be-8a38db5d1787" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019ce73f-dcf8-7a2b-9e28-3ff485a2dd70" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_019ce73f-dcf8-7635-b629-22ddbda5a015" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GrossProfit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019ce73f-dcf8-75e9-999b-c2acb8430574" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_019ce73f-dcf8-7635-b629-22ddbda5a015" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019ce73f-dcf8-75e9-999b-c2acb8430574" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenue_019ce73f-dcf8-774e-947f-26ed65190ba4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfRevenue"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_019ce73f-dcf8-7635-b629-22ddbda5a015" xlink:to="loc_us-gaap_CostOfRevenue_019ce73f-dcf8-774e-947f-26ed65190ba4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_019ce73f-dcf8-7d93-9664-44a3a4b43c32" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_019ce73f-dcf8-72cf-b8dc-f38469274748" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_019ce73f-dcf8-7d93-9664-44a3a4b43c32" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_019ce73f-dcf8-72cf-b8dc-f38469274748" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_019ce73f-dcf8-77bf-9d79-94239eeaacd2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_019ce73f-dcf8-7d93-9664-44a3a4b43c32" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_019ce73f-dcf8-77bf-9d79-94239eeaacd2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019ce73f-dcf8-725b-9e45-1470b642559e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_019ce73f-dcf8-7d93-9664-44a3a4b43c32" xlink:to="loc_us-gaap_NetIncomeLoss_019ce73f-dcf8-725b-9e45-1470b642559e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019ce73f-dcf8-7abc-b510-9e2957ac9743" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_019ce73f-dcf8-7242-bbab-aabdcfcdc2e3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingExpenses"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019ce73f-dcf8-7abc-b510-9e2957ac9743" xlink:to="loc_us-gaap_OperatingExpenses_019ce73f-dcf8-7242-bbab-aabdcfcdc2e3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_019ce73f-dcf8-7fec-8292-41b5ee4d3874" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GrossProfit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019ce73f-dcf8-7abc-b510-9e2957ac9743" xlink:to="loc_us-gaap_GrossProfit_019ce73f-dcf8-7fec-8292-41b5ee4d3874" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ouster.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="simple" xlink:href="oust-20260331.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS"/>
  <link:calculationLink xlink:role="http://ouster.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019ce73f-dcf8-7604-bb55-2ea87106f3f7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7893-ae55-5a9d1de145ba" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019ce73f-dcf8-7604-bb55-2ea87106f3f7" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7893-ae55-5a9d1de145ba" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019ce73f-dcf8-7feb-8aa9-d43a23b3a9de" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019ce73f-dcf8-7604-bb55-2ea87106f3f7" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019ce73f-dcf8-7feb-8aa9-d43a23b3a9de" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019ce73f-dcf8-7061-bc7b-05dc423211b7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019ce73f-dcf8-7604-bb55-2ea87106f3f7" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019ce73f-dcf8-7061-bc7b-05dc423211b7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019ce73f-dcf8-7dcd-b934-e99a67d9d168" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019ce73f-dcf8-7604-bb55-2ea87106f3f7" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019ce73f-dcf8-7dcd-b934-e99a67d9d168" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019ce73f-dcf8-71af-aab8-ebf76f2f73da" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_019ce73f-dcf8-71b7-9744-04e9c560d7d1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019ce73f-dcf8-71af-aab8-ebf76f2f73da" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_019ce73f-dcf8-71b7-9744-04e9c560d7d1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfShortTermInvestments_019ce73f-dcf8-72f8-9fdc-324dfff39d64" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromSaleOfShortTermInvestments"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019ce73f-dcf8-71af-aab8-ebf76f2f73da" xlink:to="loc_us-gaap_ProceedsFromSaleOfShortTermInvestments_019ce73f-dcf8-72f8-9fdc-324dfff39d64" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireShortTermInvestments_019ce73f-dcf8-70c7-b238-0af480d27443" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireShortTermInvestments"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019ce73f-dcf8-71af-aab8-ebf76f2f73da" xlink:to="loc_us-gaap_PaymentsToAcquireShortTermInvestments_019ce73f-dcf8-70c7-b238-0af480d27443" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_019d48b4-3237-7a44-9ec4-7dd4861d60d8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019ce73f-dcf8-71af-aab8-ebf76f2f73da" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_019d48b4-3237-7a44-9ec4-7dd4861d60d8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7b6b-8662-4caa5de017c5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWriteDown_019ce73f-dcf8-78d8-8fce-dc0cfa92f718" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryWriteDown"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7b6b-8662-4caa5de017c5" xlink:to="loc_us-gaap_InventoryWriteDown_019ce73f-dcf8-78d8-8fce-dc0cfa92f718" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_019ce73f-dcf8-7de2-a633-69f9bc292e41" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7b6b-8662-4caa5de017c5" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_019ce73f-dcf8-7de2-a633-69f9bc292e41" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingLeaseLiability_019ce73f-dcf8-729d-b91e-36e76f069b43" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOperatingLeaseLiability"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7b6b-8662-4caa5de017c5" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingLeaseLiability_019ce73f-dcf8-729d-b91e-36e76f069b43" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAdjustmentOfWarrants_019ce73f-dcf8-7607-90ca-e0e26b995cd3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAdjustmentOfWarrants"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7b6b-8662-4caa5de017c5" xlink:to="loc_us-gaap_FairValueAdjustmentOfWarrants_019ce73f-dcf8-7607-90ca-e0e26b995cd3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_019ce73f-dcf8-7e5d-834a-512305a1e68f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsPayable"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7b6b-8662-4caa5de017c5" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_019ce73f-dcf8-7e5d-834a-512305a1e68f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_019ce73f-dcf8-7832-8b6c-d6057a1b3e52" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerLiability"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7b6b-8662-4caa5de017c5" xlink:to="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_019ce73f-dcf8-7832-8b6c-d6057a1b3e52" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_019ce73f-dcf8-7c12-a535-c770516ff66b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7b6b-8662-4caa5de017c5" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_019ce73f-dcf8-7c12-a535-c770516ff66b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_019ce73f-dcf8-7ee8-a03d-f1561262db74" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7b6b-8662-4caa5de017c5" xlink:to="loc_us-gaap_ShareBasedCompensation_019ce73f-dcf8-7ee8-a03d-f1561262db74" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019ce73f-dcf8-72e3-87ed-cf6a3b894ac4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7b6b-8662-4caa5de017c5" xlink:to="loc_us-gaap_NetIncomeLoss_019ce73f-dcf8-72e3-87ed-cf6a3b894ac4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities_019ce73f-dcf8-7f0c-baa6-93b0f4d55069" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7b6b-8662-4caa5de017c5" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities_019ce73f-dcf8-7f0c-baa6-93b0f4d55069" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_019ce73f-dcf8-72cd-b8ab-0fefea8d6dea" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7b6b-8662-4caa5de017c5" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_019ce73f-dcf8-72cd-b8ab-0fefea8d6dea" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentOfWarrantsGrantedForServices_019ce73f-dcf8-7282-803d-077e77bdd960" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdjustmentOfWarrantsGrantedForServices"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7b6b-8662-4caa5de017c5" xlink:to="loc_us-gaap_AdjustmentOfWarrantsGrantedForServices_019ce73f-dcf8-7282-803d-077e77bdd960" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_019ce73f-dcf8-7267-aa08-2a9bd788c971" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProvisionForDoubtfulAccounts"/>
    <link:calculationArc order="13" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7b6b-8662-4caa5de017c5" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_019ce73f-dcf8-7267-aa08-2a9bd788c971" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_019ce73f-dcf8-7070-b742-0a87ed7be40f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="14" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7b6b-8662-4caa5de017c5" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_019ce73f-dcf8-7070-b742-0a87ed7be40f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_019ce73f-dcf8-742f-982e-a962a103198e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInInventories"/>
    <link:calculationArc order="15" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7b6b-8662-4caa5de017c5" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_019ce73f-dcf8-742f-982e-a962a103198e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_oust_LossOnWriteoffOfAndDisposalOfPropertyAndEquipment_019ce73f-dcf8-76a6-b38c-0628f5dd0a9a" xlink:href="oust-20260331.xsd#oust_LossOnWriteoffOfAndDisposalOfPropertyAndEquipment"/>
    <link:calculationArc order="16" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7b6b-8662-4caa5de017c5" xlink:to="loc_oust_LossOnWriteoffOfAndDisposalOfPropertyAndEquipment_019ce73f-dcf8-76a6-b38c-0628f5dd0a9a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_019ce73f-dcf8-7b25-9482-9e4d82989658" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments"/>
    <link:calculationArc order="17" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7b6b-8662-4caa5de017c5" xlink:to="loc_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_019ce73f-dcf8-7b25-9482-9e4d82989658" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedGain_019ce73f-dcf8-760a-8a6e-276348563bfe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtSecuritiesAvailableForSaleRealizedGain"/>
    <link:calculationArc order="18" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7b6b-8662-4caa5de017c5" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedGain_019ce73f-dcf8-760a-8a6e-276348563bfe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnTerminationOfLease_019ce73f-dcf8-7c9e-8c51-dc4fdc7902e9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnTerminationOfLease"/>
    <link:calculationArc order="19" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7b6b-8662-4caa5de017c5" xlink:to="loc_us-gaap_GainLossOnTerminationOfLease_019ce73f-dcf8-7c9e-8c51-dc4fdc7902e9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_019dc07d-bc39-791b-8167-a5c9588b33ea" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInDeferredIncomeTaxes"/>
    <link:calculationArc order="20" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019ce73f-dcf8-7b6b-8662-4caa5de017c5" xlink:to="loc_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_019dc07d-bc39-791b-8167-a5c9588b33ea" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019ce73f-dcf8-72c8-a546-1aa32c645a4b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromStockOptionsExercised_019ce73f-dcf8-7ed0-a9bf-3dc3ba4903a4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromStockOptionsExercised"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019ce73f-dcf8-72c8-a546-1aa32c645a4b" xlink:to="loc_us-gaap_ProceedsFromStockOptionsExercised_019ce73f-dcf8-7ed0-a9bf-3dc3ba4903a4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_oust_ProceedsFromPaymentsForTaxWithholdingShareBasedPaymentArrangement_019ce73f-dcf8-75f8-a6b2-fc768adeb4f3" xlink:href="oust-20260331.xsd#oust_ProceedsFromPaymentsForTaxWithholdingShareBasedPaymentArrangement"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019ce73f-dcf8-72c8-a546-1aa32c645a4b" xlink:to="loc_oust_ProceedsFromPaymentsForTaxWithholdingShareBasedPaymentArrangement_019ce73f-dcf8-75f8-a6b2-fc768adeb4f3" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ouster.com/role/BusinessCombinationandRelatedTransactionsScheduleofAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="simple" xlink:href="oust-20260331.xsd#BusinessCombinationandRelatedTransactionsScheduleofAssetsAcquiredandLiabilitiesAssumedDetails"/>
  <link:calculationLink xlink:role="http://ouster.com/role/BusinessCombinationandRelatedTransactionsScheduleofAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_019ce73f-dcf8-72fd-bed0-352f0feaaf7b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_019ce73f-dcf8-79fe-a259-aa840a4f023c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_019ce73f-dcf8-72fd-bed0-352f0feaaf7b" xlink:to="loc_us-gaap_Goodwill_019ce73f-dcf8-79fe-a259-aa840a4f023c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019ce73f-dcf8-7958-b07d-ce6f6f19a97f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_019ce73f-dcf8-72fd-bed0-352f0feaaf7b" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019ce73f-dcf8-7958-b07d-ce6f6f19a97f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019ce73f-dcf8-7c96-b0c3-5c7a213e1208" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_019ce73f-dcf8-7d01-91e6-1ea37f0f31e6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019ce73f-dcf8-7c96-b0c3-5c7a213e1208" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_019ce73f-dcf8-7d01-91e6-1ea37f0f31e6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_019ce73f-dcf8-7026-bec2-415c1b0b195e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019ce73f-dcf8-7c96-b0c3-5c7a213e1208" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_019ce73f-dcf8-7026-bec2-415c1b0b195e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_oust_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractWithCustomerLiabilityCurrent_019ce73f-dcf8-73c2-a6fc-44062bb6b516" xlink:href="oust-20260331.xsd#oust_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractWithCustomerLiabilityCurrent"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019ce73f-dcf8-7c96-b0c3-5c7a213e1208" xlink:to="loc_oust_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractWithCustomerLiabilityCurrent_019ce73f-dcf8-73c2-a6fc-44062bb6b516" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_oust_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedAndOtherCurrentLiabilities_019ce73f-dcf8-7b48-84a8-40aefb3e31b5" xlink:href="oust-20260331.xsd#oust_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedAndOtherCurrentLiabilities"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019ce73f-dcf8-7c96-b0c3-5c7a213e1208" xlink:to="loc_oust_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedAndOtherCurrentLiabilities_019ce73f-dcf8-7b48-84a8-40aefb3e31b5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_019ce73f-dcf8-77a0-8652-e2805e3f7b1a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019ce73f-dcf8-7c96-b0c3-5c7a213e1208" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_019ce73f-dcf8-77a0-8652-e2805e3f7b1a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_019ce73f-dcf8-7a37-afd2-2a432e57b638" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019ce73f-dcf8-7c96-b0c3-5c7a213e1208" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_019ce73f-dcf8-7a37-afd2-2a432e57b638" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_019ce73f-dcf8-7142-9e92-e3a769e955e0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019ce73f-dcf8-7c96-b0c3-5c7a213e1208" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_019ce73f-dcf8-7142-9e92-e3a769e955e0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_019ce73f-dcf8-7787-b042-70a7f969dfa2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019ce73f-dcf8-7c96-b0c3-5c7a213e1208" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_019ce73f-dcf8-7787-b042-70a7f969dfa2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_019ce73f-dcf8-7010-af66-efab9946b931" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019ce73f-dcf8-7c96-b0c3-5c7a213e1208" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_019ce73f-dcf8-7010-af66-efab9946b931" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_oust_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseLiabilityCurrent_019ce73f-dcf8-74eb-8bc3-0f1c7195d7d1" xlink:href="oust-20260331.xsd#oust_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019ce73f-dcf8-7c96-b0c3-5c7a213e1208" xlink:to="loc_oust_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseLiabilityCurrent_019ce73f-dcf8-74eb-8bc3-0f1c7195d7d1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_019ce73f-dcf8-7c62-87f4-290f56014aa6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019ce73f-dcf8-7c96-b0c3-5c7a213e1208" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_019ce73f-dcf8-7c62-87f4-290f56014aa6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_oust_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets_019ce73f-dcf8-7920-b63a-0d97c5d5556d" xlink:href="oust-20260331.xsd#oust_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019ce73f-dcf8-7c96-b0c3-5c7a213e1208" xlink:to="loc_oust_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets_019ce73f-dcf8-7920-b63a-0d97c5d5556d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_oust_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseLiabilityNoncurrent_019ce73f-dcf8-7e37-ae70-b761847352d0" xlink:href="oust-20260331.xsd#oust_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="13" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019ce73f-dcf8-7c96-b0c3-5c7a213e1208" xlink:to="loc_oust_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseLiabilityNoncurrent_019ce73f-dcf8-7e37-ae70-b761847352d0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_019ce73f-dcf8-7222-bde3-e2ba17ec2a76" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables"/>
    <link:calculationArc order="14" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019ce73f-dcf8-7c96-b0c3-5c7a213e1208" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_019ce73f-dcf8-7222-bde3-e2ba17ec2a76" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ouster.com/role/FairValueofFinancialInstrumentsScheduleofFairValueAssetsandLiabilitiesMeasuredonRecurringBasisDetails" xlink:type="simple" xlink:href="oust-20260331.xsd#FairValueofFinancialInstrumentsScheduleofFairValueAssetsandLiabilitiesMeasuredonRecurringBasisDetails"/>
  <link:calculationLink xlink:role="http://ouster.com/role/FairValueofFinancialInstrumentsScheduleofFairValueAssetsandLiabilitiesMeasuredonRecurringBasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_019ce73f-ddaa-7e81-abe2-76f7df2e8313" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_019ce73f-ddaa-7177-9f30-7aa418071b02" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019ce73f-ddaa-7e81-abe2-76f7df2e8313" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_019ce73f-ddaa-7177-9f30-7aa418071b02" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterestCurrent_019ce73f-ddaa-7899-8bc9-a15b8d2fd74f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterestCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019ce73f-ddaa-7e81-abe2-76f7df2e8313" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterestCurrent_019ce73f-ddaa-7899-8bc9-a15b8d2fd74f" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ouster.com/role/BalanceSheetComponentsScheduleofCashandCashEquivalentsDetails" xlink:type="simple" xlink:href="oust-20260331.xsd#BalanceSheetComponentsScheduleofCashandCashEquivalentsDetails"/>
  <link:calculationLink xlink:role="http://ouster.com/role/BalanceSheetComponentsScheduleofCashandCashEquivalentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019ce73f-ddaa-71cb-9438-0f77ac0a5b3e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Cash_019ce73f-ddaa-73e4-9cd8-9c75c27427b4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Cash"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019ce73f-ddaa-71cb-9438-0f77ac0a5b3e" xlink:to="loc_us-gaap_Cash_019ce73f-ddaa-73e4-9cd8-9c75c27427b4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashEquivalentsAtCarryingValue_019ce73f-ddaa-723d-b228-8dad533b7878" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019ce73f-ddaa-71cb-9438-0f77ac0a5b3e" xlink:to="loc_us-gaap_CashEquivalentsAtCarryingValue_019ce73f-ddaa-723d-b228-8dad533b7878" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ouster.com/role/BalanceSheetComponentsScheduleofReconciliationofCashCashEquivalentsandRestrictedCashReportedDetails" xlink:type="simple" xlink:href="oust-20260331.xsd#BalanceSheetComponentsScheduleofReconciliationofCashCashEquivalentsandRestrictedCashReportedDetails"/>
  <link:calculationLink xlink:role="http://ouster.com/role/BalanceSheetComponentsScheduleofReconciliationofCashCashEquivalentsandRestrictedCashReportedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019ce73f-ddaa-7cea-8b77-ad0d01cfc6d7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashCurrent_019ce73f-ddaa-7fdc-be4e-1e33ad5ccba7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019ce73f-ddaa-7cea-8b77-ad0d01cfc6d7" xlink:to="loc_us-gaap_RestrictedCashCurrent_019ce73f-ddaa-7fdc-be4e-1e33ad5ccba7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashNoncurrent_019ce73f-ddaa-79c7-b805-3c690b6ff4d8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019ce73f-ddaa-7cea-8b77-ad0d01cfc6d7" xlink:to="loc_us-gaap_RestrictedCashNoncurrent_019ce73f-ddaa-79c7-b805-3c690b6ff4d8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019ce73f-ddaa-715a-a4f8-3dd270ce8c62" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019ce73f-ddaa-7cea-8b77-ad0d01cfc6d7" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019ce73f-ddaa-715a-a4f8-3dd270ce8c62" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ouster.com/role/BalanceSheetComponentsScheduleofInventoryDetails" xlink:type="simple" xlink:href="oust-20260331.xsd#BalanceSheetComponentsScheduleofInventoryDetails"/>
  <link:calculationLink xlink:role="http://ouster.com/role/BalanceSheetComponentsScheduleofInventoryDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_019ce73f-ddaa-7323-a62f-cbf525af28d0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWorkInProcessNetOfReserves_019ce73f-ddaa-7a3c-ab21-b463f5fb4d67" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryWorkInProcessNetOfReserves"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_019ce73f-ddaa-7323-a62f-cbf525af28d0" xlink:to="loc_us-gaap_InventoryWorkInProcessNetOfReserves_019ce73f-ddaa-7a3c-ab21-b463f5fb4d67" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryRawMaterialsNetOfReserves_019ce73f-ddaa-7004-a0c2-9d87362eec0e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryRawMaterialsNetOfReserves"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_019ce73f-ddaa-7323-a62f-cbf525af28d0" xlink:to="loc_us-gaap_InventoryRawMaterialsNetOfReserves_019ce73f-ddaa-7004-a0c2-9d87362eec0e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_019ce73f-ddaa-7360-92cc-0b41b4ecafad" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryFinishedGoodsNetOfReserves"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_019ce73f-ddaa-7323-a62f-cbf525af28d0" xlink:to="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_019ce73f-ddaa-7360-92cc-0b41b4ecafad" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ouster.com/role/BalanceSheetComponentsScheduleofPrepaidExpensesandOtherCurrentAssetsDetails" xlink:type="simple" xlink:href="oust-20260331.xsd#BalanceSheetComponentsScheduleofPrepaidExpensesandOtherCurrentAssetsDetails"/>
  <link:calculationLink xlink:role="http://ouster.com/role/BalanceSheetComponentsScheduleofPrepaidExpensesandOtherCurrentAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019ce73f-ddaa-7a72-bd5a-5bd68d3c64b3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_oust_ReceivableFromContractManufacturerCurrent_019ce73f-ddaa-706b-a929-b2c9e886f95b" xlink:href="oust-20260331.xsd#oust_ReceivableFromContractManufacturerCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019ce73f-ddaa-7a72-bd5a-5bd68d3c64b3" xlink:to="loc_oust_ReceivableFromContractManufacturerCurrent_019ce73f-ddaa-706b-a929-b2c9e886f95b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidInsurance_019ce73f-ddaa-7c8f-821e-ca498472fbfe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PrepaidInsurance"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019ce73f-ddaa-7a72-bd5a-5bd68d3c64b3" xlink:to="loc_us-gaap_PrepaidInsurance_019ce73f-ddaa-7c8f-821e-ca498472fbfe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_019ce73f-ddaa-775e-93a9-a43230f0921b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019ce73f-ddaa-7a72-bd5a-5bd68d3c64b3" xlink:to="loc_us-gaap_OtherAssetsCurrent_019ce73f-ddaa-775e-93a9-a43230f0921b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPrepaidExpenseCurrent_019ce73f-ddaa-7a0d-aa2b-681755922247" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherPrepaidExpenseCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019ce73f-ddaa-7a72-bd5a-5bd68d3c64b3" xlink:to="loc_us-gaap_OtherPrepaidExpenseCurrent_019ce73f-ddaa-7a0d-aa2b-681755922247" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesReceivable_019d491e-21de-7346-a3ad-d6d539995ad0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxesReceivable"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019ce73f-ddaa-7a72-bd5a-5bd68d3c64b3" xlink:to="loc_us-gaap_IncomeTaxesReceivable_019d491e-21de-7346-a3ad-d6d539995ad0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_oust_PrepaidInventory_019daab4-833c-7650-b390-f9120a05aa76" xlink:href="oust-20260331.xsd#oust_PrepaidInventory"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019ce73f-ddaa-7a72-bd5a-5bd68d3c64b3" xlink:to="loc_oust_PrepaidInventory_019daab4-833c-7650-b390-f9120a05aa76" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationIndemnificationAssetsAmountAsOfAcquisitionDate_019daab4-833c-705f-840e-26566bd49e41" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationIndemnificationAssetsAmountAsOfAcquisitionDate"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019ce73f-ddaa-7a72-bd5a-5bd68d3c64b3" xlink:to="loc_us-gaap_BusinessCombinationIndemnificationAssetsAmountAsOfAcquisitionDate_019daab4-833c-705f-840e-26566bd49e41" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ouster.com/role/BalanceSheetComponentsScheduleofPropertyPlantandEquipmentDetails" xlink:type="simple" xlink:href="oust-20260331.xsd#BalanceSheetComponentsScheduleofPropertyPlantandEquipmentDetails"/>
  <link:calculationLink xlink:role="http://ouster.com/role/BalanceSheetComponentsScheduleofPropertyPlantandEquipmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_019ce73f-ddaa-712e-b2d4-5a636092eb57" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_019ce73f-ddaa-7c55-8407-475493937763" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_019ce73f-ddaa-712e-b2d4-5a636092eb57" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_019ce73f-ddaa-7c55-8407-475493937763" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_019ce73f-ddaa-7c3e-babc-acf19460d89b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_019ce73f-ddaa-712e-b2d4-5a636092eb57" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_019ce73f-ddaa-7c3e-babc-acf19460d89b" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ouster.com/role/BalanceSheetComponentsScheduleofAcquiredIntangibleAssetsDetails" xlink:type="simple" xlink:href="oust-20260331.xsd#BalanceSheetComponentsScheduleofAcquiredIntangibleAssetsDetails"/>
  <link:calculationLink xlink:role="http://ouster.com/role/BalanceSheetComponentsScheduleofAcquiredIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019ce73f-ddaa-7b38-a876-7713e649a5d6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019ce73f-ddaa-7b30-a6b8-c9ea97c8095b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019ce73f-ddaa-7b38-a876-7713e649a5d6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019ce73f-ddaa-7b30-a6b8-c9ea97c8095b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_019ce73f-ddaa-74ad-bb88-84259dee396f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019ce73f-ddaa-7b38-a876-7713e649a5d6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_019ce73f-ddaa-74ad-bb88-84259dee396f" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ouster.com/role/BalanceSheetComponentsScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseDetails" xlink:type="simple" xlink:href="oust-20260331.xsd#BalanceSheetComponentsScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseDetails"/>
  <link:calculationLink xlink:role="http://ouster.com/role/BalanceSheetComponentsScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019ce73f-ddaa-73a4-ac4a-8739202b6b2c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_oust_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour_019ce73f-ddaa-7728-b49c-c0ff51e3df74" xlink:href="oust-20260331.xsd#oust_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019ce73f-ddaa-73a4-ac4a-8739202b6b2c" xlink:to="loc_oust_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour_019ce73f-ddaa-7728-b49c-c0ff51e3df74" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_019ce73f-ddaa-70c8-bc03-ce6efab7c3ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019ce73f-ddaa-73a4-ac4a-8739202b6b2c" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_019ce73f-ddaa-70c8-bc03-ce6efab7c3ed" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_019ce73f-ddaa-7a59-9e25-f80b2f236a4d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019ce73f-ddaa-73a4-ac4a-8739202b6b2c" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_019ce73f-ddaa-7a59-9e25-f80b2f236a4d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_019ce73f-ddaa-743f-90a2-c829adcd52ce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019ce73f-ddaa-73a4-ac4a-8739202b6b2c" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_019ce73f-ddaa-743f-90a2-c829adcd52ce" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_019ce73f-ddaa-72b3-b1f8-fef38e9e3732" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019ce73f-ddaa-73a4-ac4a-8739202b6b2c" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_019ce73f-ddaa-72b3-b1f8-fef38e9e3732" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_019ce73f-ddaa-7d30-a776-5cac6ca17433" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019ce73f-ddaa-73a4-ac4a-8739202b6b2c" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_019ce73f-ddaa-7d30-a776-5cac6ca17433" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ouster.com/role/BalanceSheetComponentsScheduleofAccruedandOtherCurrentLiabilitiesDetails" xlink:type="simple" xlink:href="oust-20260331.xsd#BalanceSheetComponentsScheduleofAccruedandOtherCurrentLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://ouster.com/role/BalanceSheetComponentsScheduleofAccruedandOtherCurrentLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_oust_AccruedAndOtherLiabilitiesCurrent_019ce73f-ddaa-73c3-8281-b003189b0a32" xlink:href="oust-20260331.xsd#oust_AccruedAndOtherLiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualCarryingValueCurrent_019ce73f-ddaa-74c0-bcde-15018bde3583" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LossContingencyAccrualCarryingValueCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_oust_AccruedAndOtherLiabilitiesCurrent_019ce73f-ddaa-73c3-8281-b003189b0a32" xlink:to="loc_us-gaap_LossContingencyAccrualCarryingValueCurrent_019ce73f-ddaa-74c0-bcde-15018bde3583" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_oust_UninvoicedReceiptsOtherCurrentLiabilities_019ce73f-ddaa-73af-a11e-a50fd4863baf" xlink:href="oust-20260331.xsd#oust_UninvoicedReceiptsOtherCurrentLiabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_oust_AccruedAndOtherLiabilitiesCurrent_019ce73f-ddaa-73c3-8281-b003189b0a32" xlink:to="loc_oust_UninvoicedReceiptsOtherCurrentLiabilities_019ce73f-ddaa-73af-a11e-a50fd4863baf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_019ce73f-ddaa-79e6-9bf6-94fac823d32b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_oust_AccruedAndOtherLiabilitiesCurrent_019ce73f-ddaa-73c3-8281-b003189b0a32" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_019ce73f-ddaa-79e6-9bf6-94fac823d32b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesAndExciseTaxPayableCurrent_019ce73f-ddaa-75dd-bbf6-5266ac74d856" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SalesAndExciseTaxPayableCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_oust_AccruedAndOtherLiabilitiesCurrent_019ce73f-ddaa-73c3-8281-b003189b0a32" xlink:to="loc_us-gaap_SalesAndExciseTaxPayableCurrent_019ce73f-ddaa-75dd-bbf6-5266ac74d856" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_019ce73f-ddaa-7781-ac11-ee0015c386a2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAccruedLiabilitiesCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_oust_AccruedAndOtherLiabilitiesCurrent_019ce73f-ddaa-73c3-8281-b003189b0a32" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_019ce73f-ddaa-7781-ac11-ee0015c386a2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StandardProductWarrantyAccrual_019daab7-190a-7009-84ad-0aa52f9cfa63" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StandardProductWarrantyAccrual"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_oust_AccruedAndOtherLiabilitiesCurrent_019ce73f-ddaa-73c3-8281-b003189b0a32" xlink:to="loc_us-gaap_StandardProductWarrantyAccrual_019daab7-190a-7009-84ad-0aa52f9cfa63" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ouster.com/role/RevenueScheduleofContractLiabilitiesDetails" xlink:type="simple" xlink:href="oust-20260331.xsd#RevenueScheduleofContractLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://ouster.com/role/RevenueScheduleofContractLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNet_019d4994-41f1-72d7-8c57-61d56605653b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerAssetNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNetCurrent_019d4994-41f1-782c-8020-91002a48e883" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerAssetNetCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ContractWithCustomerAssetNet_019d4994-41f1-72d7-8c57-61d56605653b" xlink:to="loc_us-gaap_ContractWithCustomerAssetNetCurrent_019d4994-41f1-782c-8020-91002a48e883" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNetNoncurrent_019d4994-41f1-70f5-b879-f4fa5ecfeda6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerAssetNetNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ContractWithCustomerAssetNet_019d4994-41f1-72d7-8c57-61d56605653b" xlink:to="loc_us-gaap_ContractWithCustomerAssetNetNoncurrent_019d4994-41f1-70f5-b879-f4fa5ecfeda6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_019d4994-41f1-7aad-9184-b652c1d18a74" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiability"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_019d4994-41f1-7155-97f7-077b84d13c96" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ContractWithCustomerLiability_019d4994-41f1-7aad-9184-b652c1d18a74" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_019d4994-41f1-7155-97f7-077b84d13c96" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_019d4994-41f1-7d22-8520-9861c3c88f31" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiabilityNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ContractWithCustomerLiability_019d4994-41f1-7aad-9184-b652c1d18a74" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_019d4994-41f1-7d22-8520-9861c3c88f31" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://ouster.com/role/SegmentsScheduleofSegmentReportingInformationDetails" xlink:type="simple" xlink:href="oust-20260331.xsd#SegmentsScheduleofSegmentReportingInformationDetails"/>
  <link:calculationLink xlink:role="http://ouster.com/role/SegmentsScheduleofSegmentReportingInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019ce73f-ddab-7546-a222-e02a7cbe5622" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019ce73f-ddab-7aea-ac11-67299ac39494" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019ce73f-ddab-7546-a222-e02a7cbe5622" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019ce73f-ddab-7aea-ac11-67299ac39494" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ManufacturingCosts_019ce73f-ddab-7b36-bdc6-27b630e0e153" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ManufacturingCosts"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019ce73f-ddab-7546-a222-e02a7cbe5622" xlink:to="loc_us-gaap_ManufacturingCosts_019ce73f-ddab-7b36-bdc6-27b630e0e153" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_019ce73f-ddab-711a-ae9c-83cfa6444fee" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019ce73f-ddab-7546-a222-e02a7cbe5622" xlink:to="loc_us-gaap_ShareBasedCompensation_019ce73f-ddab-711a-ae9c-83cfa6444fee" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCostOfOperatingRevenue_019ce73f-ddab-78eb-8dc2-58c6b34bbebb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherCostOfOperatingRevenue"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019ce73f-ddab-7546-a222-e02a7cbe5622" xlink:to="loc_us-gaap_OtherCostOfOperatingRevenue_019ce73f-ddab-78eb-8dc2-58c6b34bbebb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_019ce73f-ddab-7af4-bb61-013994d3a50c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019ce73f-ddab-7546-a222-e02a7cbe5622" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_019ce73f-ddab-7af4-bb61-013994d3a50c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingAndMarketingExpense_019ce73f-ddab-746d-bece-3a42298394f3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SellingAndMarketingExpense"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019ce73f-ddab-7546-a222-e02a7cbe5622" xlink:to="loc_us-gaap_SellingAndMarketingExpense_019ce73f-ddab-746d-bece-3a42298394f3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_019ce73f-ddab-7b63-92e8-019332655935" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019ce73f-ddab-7546-a222-e02a7cbe5622" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_019ce73f-ddab-7b63-92e8-019332655935" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_019ce73f-ddab-73db-bb63-b174821b81d2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019ce73f-ddab-7546-a222-e02a7cbe5622" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_019ce73f-ddab-73db-bb63-b174821b81d2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019ce73f-ddab-7580-998d-67bb14a9454c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019ce73f-ddab-7546-a222-e02a7cbe5622" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019ce73f-ddab-7580-998d-67bb14a9454c" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
