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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019cd4a4-7395-7a0e-8ed4-d2722e0d136e,g:00c8ca01-8b5f-475f-9282-82563a60d9a0-->
<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://www.rocketlabusa.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS" xlink:type="simple" xlink:href="rklb-20260331.xsd#CONDENSEDCONSOLIDATEDBALANCESHEETS"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019cd4a4-7508-752b-8d1a-cafaf3208970" 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_AdditionalPaidInCapital_019cd4a4-7508-7a4b-bae8-214e5a6948bb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019cd4a4-7508-752b-8d1a-cafaf3208970" xlink:to="loc_us-gaap_AdditionalPaidInCapital_019cd4a4-7508-7a4b-bae8-214e5a6948bb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_019cd4a4-7508-7283-b415-7cbfe0a1623b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PreferredStockValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019cd4a4-7508-752b-8d1a-cafaf3208970" xlink:to="loc_us-gaap_PreferredStockValue_019cd4a4-7508-7283-b415-7cbfe0a1623b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019cd4a4-7508-7e8c-b3a9-cc4a0a1c8c4e" 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_019cd4a4-7508-752b-8d1a-cafaf3208970" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019cd4a4-7508-7e8c-b3a9-cc4a0a1c8c4e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonValue_019cd4a4-7508-72e9-9d87-e9e727286056" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockCommonValue"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019cd4a4-7508-752b-8d1a-cafaf3208970" xlink:to="loc_us-gaap_TreasuryStockCommonValue_019cd4a4-7508-72e9-9d87-e9e727286056" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019cd4a4-7508-718d-b6f3-241b544cf050" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019cd4a4-7508-752b-8d1a-cafaf3208970" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019cd4a4-7508-718d-b6f3-241b544cf050" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_019cd4a4-7508-74ee-8a39-287a62069415" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019cd4a4-7508-752b-8d1a-cafaf3208970" xlink:to="loc_us-gaap_CommonStockValue_019cd4a4-7508-74ee-8a39-287a62069415" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_019cd4a4-7508-752a-be20-f58d03681dfc" 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_ContractWithCustomerAssetNetCurrent_019cd4a4-7508-785c-89f4-bd7da7a803cb" 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_AssetsCurrent_019cd4a4-7508-752a-be20-f58d03681dfc" xlink:to="loc_us-gaap_ContractWithCustomerAssetNetCurrent_019cd4a4-7508-785c-89f4-bd7da7a803cb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019cd4a4-7508-76f2-96ad-89a54d4813a2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019cd4a4-7508-752a-be20-f58d03681dfc" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019cd4a4-7508-76f2-96ad-89a54d4813a2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_019cd4a4-7508-7390-a378-449c8e003ea3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryNet"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019cd4a4-7508-752a-be20-f58d03681dfc" xlink:to="loc_us-gaap_InventoryNet_019cd4a4-7508-7390-a378-449c8e003ea3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_019cd4a4-7508-7adb-bdad-b20e6b4337ee" 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_019cd4a4-7508-752a-be20-f58d03681dfc" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_019cd4a4-7508-7adb-bdad-b20e6b4337ee" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019cd4a4-7508-7cab-9b5f-48200ed433f5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019cd4a4-7508-752a-be20-f58d03681dfc" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019cd4a4-7508-7cab-9b5f-48200ed433f5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesCurrent_019cd4a4-7508-7216-9e23-962ea98bc52e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MarketableSecuritiesCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019cd4a4-7508-752a-be20-f58d03681dfc" xlink:to="loc_us-gaap_MarketableSecuritiesCurrent_019cd4a4-7508-7216-9e23-962ea98bc52e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019cd4a4-7508-71b8-a0b6-1d19dc0374d8" 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_019cd4a4-7508-7b25-9c1c-268c65e8933c" 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_019cd4a4-7508-71b8-a0b6-1d19dc0374d8" xlink:to="loc_us-gaap_AssetsCurrent_019cd4a4-7508-7b25-9c1c-268c65e8933c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_019cd4a4-7508-7a52-a910-e03c0ed73a32" 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_019cd4a4-7508-71b8-a0b6-1d19dc0374d8" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_019cd4a4-7508-7a52-a910-e03c0ed73a32" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019cd4a4-7508-7c77-82f4-79f8d9606595" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019cd4a4-7508-71b8-a0b6-1d19dc0374d8" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019cd4a4-7508-7c77-82f4-79f8d9606595" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_019cd4a4-7508-7d35-90bf-f6c810be437a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019cd4a4-7508-71b8-a0b6-1d19dc0374d8" xlink:to="loc_us-gaap_Goodwill_019cd4a4-7508-7d35-90bf-f6c810be437a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_019cd4a4-7508-7e9c-a8e6-191d36d67938" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019cd4a4-7508-71b8-a0b6-1d19dc0374d8" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_019cd4a4-7508-7e9c-a8e6-191d36d67938" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAsset_019cd4a4-7508-7805-b473-163aca7c8174" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseRightOfUseAsset"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019cd4a4-7508-71b8-a0b6-1d19dc0374d8" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAsset_019cd4a4-7508-7805-b473-163aca7c8174" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesNoncurrent_019cd4a4-7508-7759-9c6f-fd18d04f4922" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MarketableSecuritiesNoncurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019cd4a4-7508-71b8-a0b6-1d19dc0374d8" xlink:to="loc_us-gaap_MarketableSecuritiesNoncurrent_019cd4a4-7508-7759-9c6f-fd18d04f4922" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashNoncurrent_019cd4a4-7508-7352-b1cc-e7e1a594be78" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashNoncurrent"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019cd4a4-7508-71b8-a0b6-1d19dc0374d8" xlink:to="loc_us-gaap_RestrictedCashNoncurrent_019cd4a4-7508-7352-b1cc-e7e1a594be78" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_019cd4a4-7508-752d-bd99-2cbad16fe616" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxAssetsNet"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019cd4a4-7508-71b8-a0b6-1d19dc0374d8" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_019cd4a4-7508-752d-bd99-2cbad16fe616" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_019cd4a4-7508-78dc-9ebf-6a0de0f352d2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019cd4a4-7508-71b8-a0b6-1d19dc0374d8" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_019cd4a4-7508-78dc-9ebf-6a0de0f352d2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019cd4a4-7508-7952-876b-b43f0e952196" 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_019cd4a4-7508-7c43-99fb-35f7ee555b61" 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_019cd4a4-7508-7952-876b-b43f0e952196" xlink:to="loc_us-gaap_LiabilitiesCurrent_019cd4a4-7508-7c43-99fb-35f7ee555b61" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_019cd4a4-7508-77d0-8569-a7d9a1665548" 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_019cd4a4-7508-7952-876b-b43f0e952196" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_019cd4a4-7508-77d0-8569-a7d9a1665548" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_019cd4a4-7508-741c-84df-5e0786f6c599" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebt"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019cd4a4-7508-7952-876b-b43f0e952196" xlink:to="loc_us-gaap_LongTermDebt_019cd4a4-7508-741c-84df-5e0786f6c599" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_019cd4a4-7508-73d2-bd5b-1bb0897b3917" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019cd4a4-7508-7952-876b-b43f0e952196" xlink:to="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_019cd4a4-7508-73d2-bd5b-1bb0897b3917" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_019cd4a4-7508-7b26-acae-7b6e939a4160" 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_019cd4a4-7508-7952-876b-b43f0e952196" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_019cd4a4-7508-7b26-acae-7b6e939a4160" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_019cd4a4-7508-7a69-802a-9e7abb2f3b1d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019cd4a4-7508-7952-876b-b43f0e952196" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_019cd4a4-7508-7a69-802a-9e7abb2f3b1d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_019cd4a4-7508-7616-9043-ef758b6f1e15" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019cd4a4-7508-7952-876b-b43f0e952196" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_019cd4a4-7508-7616-9043-ef758b6f1e15" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_019cd4a4-7508-7425-8d09-bc7ae9655c8d" 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_StockholdersEquity_019cd4a4-7508-753d-a042-636b997fa103" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019cd4a4-7508-7425-8d09-bc7ae9655c8d" xlink:to="loc_us-gaap_StockholdersEquity_019cd4a4-7508-753d-a042-636b997fa103" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019cd4a4-7508-7d9f-91e6-2eeab858204c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019cd4a4-7508-7425-8d09-bc7ae9655c8d" xlink:to="loc_us-gaap_Liabilities_019cd4a4-7508-7d9f-91e6-2eeab858204c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_019cd4a4-7508-7705-91e3-6a7de4af3893" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_019cd4a4-7508-7425-8d09-bc7ae9655c8d" xlink:to="loc_us-gaap_CommitmentsAndContingencies_019cd4a4-7508-7705-91e3-6a7de4af3893" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_019cd4a4-7508-7f50-96ca-7244b5d8a915" 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_AccountsPayableCurrent_019cd4a4-7508-7387-9119-c1b0519d32cd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019cd4a4-7508-7f50-96ca-7244b5d8a915" xlink:to="loc_us-gaap_AccountsPayableCurrent_019cd4a4-7508-7387-9119-c1b0519d32cd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_019cd4a4-7508-7196-a0fc-8d34cf8855bb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019cd4a4-7508-7f50-96ca-7244b5d8a915" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_019cd4a4-7508-7196-a0fc-8d34cf8855bb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_019cd4a4-7508-7d37-a772-e7849e7e23ad" 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_us-gaap_LiabilitiesCurrent_019cd4a4-7508-7f50-96ca-7244b5d8a915" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_019cd4a4-7508-7d37-a772-e7849e7e23ad" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_019cd4a4-7508-7bd8-80c6-739620783680" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019cd4a4-7508-7f50-96ca-7244b5d8a915" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_019cd4a4-7508-7bd8-80c6-739620783680" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_019cd4a4-7508-789d-8240-892f886dbdc8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019cd4a4-7508-7f50-96ca-7244b5d8a915" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_019cd4a4-7508-789d-8240-892f886dbdc8" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVELOSS" xlink:type="simple" xlink:href="rklb-20260331.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVELOSS"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVELOSS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_019cd4a4-7509-755b-801c-49709b9957f1" 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_SellingGeneralAndAdministrativeExpense_019cd4a4-7509-747e-8ea8-e21854f12d77" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_019cd4a4-7509-755b-801c-49709b9957f1" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019cd4a4-7509-747e-8ea8-e21854f12d77" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_019cd4a4-7509-750d-8793-677d9307b329" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_019cd4a4-7509-755b-801c-49709b9957f1" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_019cd4a4-7509-750d-8793-677d9307b329" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019cd4a4-7509-74b4-9ea0-9f0f8760144b" 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_GrossProfit_019cd4a4-7509-7200-a5a6-7b3584312e75" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GrossProfit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019cd4a4-7509-74b4-9ea0-9f0f8760144b" xlink:to="loc_us-gaap_GrossProfit_019cd4a4-7509-7200-a5a6-7b3584312e75" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_019cd4a4-7509-759b-9fdf-925e9e1338b7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingExpenses"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019cd4a4-7509-74b4-9ea0-9f0f8760144b" xlink:to="loc_us-gaap_OperatingExpenses_019cd4a4-7509-759b-9fdf-925e9e1338b7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_019cd4a4-7509-75d9-8209-cf97de3f2001" 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_019cd4a4-7509-74f6-8d49-fb4852daa55b" 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_019cd4a4-7509-75d9-8209-cf97de3f2001" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_019cd4a4-7509-74f6-8d49-fb4852daa55b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_019cd4a4-7509-7abe-8c33-eb3d43145227" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_019cd4a4-7509-75d9-8209-cf97de3f2001" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_019cd4a4-7509-7abe-8c33-eb3d43145227" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019cd4a4-7509-7f2d-9c89-25fe7b927a8e" 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_019cd4a4-7509-75d9-8209-cf97de3f2001" xlink:to="loc_us-gaap_NetIncomeLoss_019cd4a4-7509-7f2d-9c89-25fe7b927a8e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_019cd4a4-7509-793a-975d-8b308c5d3941" 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_019cd4a4-7509-7d38-8978-c6d0efa88a77" 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_019cd4a4-7509-793a-975d-8b308c5d3941" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019cd4a4-7509-7d38-8978-c6d0efa88a77" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenue_019cd4a4-7509-793c-9e38-435c257aa736" 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_019cd4a4-7509-793a-975d-8b308c5d3941" xlink:to="loc_us-gaap_CostOfRevenue_019cd4a4-7509-793c-9e38-435c257aa736" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_019cd4a4-7509-7798-aa68-9d4ada4534c4" 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_InterestExpenseNonoperating_019cd4a4-7509-7f06-bca2-64de17d4bb02" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_019cd4a4-7509-7798-aa68-9d4ada4534c4" xlink:to="loc_us-gaap_InterestExpenseNonoperating_019cd4a4-7509-7f06-bca2-64de17d4bb02" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeNonoperating_019cd4a4-7509-7db0-be11-be335b212795" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentIncomeNonoperating"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_019cd4a4-7509-7798-aa68-9d4ada4534c4" xlink:to="loc_us-gaap_InvestmentIncomeNonoperating_019cd4a4-7509-7db0-be11-be335b212795" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_019cd4a4-7509-7189-aced-f746a16d510e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_019cd4a4-7509-7798-aa68-9d4ada4534c4" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_019cd4a4-7509-7189-aced-f746a16d510e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019dabc8-0a0b-7b00-9af9-93ee0388abba" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_019cd4a4-7509-7798-aa68-9d4ada4534c4" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019dabc8-0a0b-7b00-9af9-93ee0388abba" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019cd4a4-7509-7efe-87ab-e519804dabe4" 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_019cd4a4-7509-7971-b285-b03f10565edd" 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_019cd4a4-7509-7efe-87ab-e519804dabe4" xlink:to="loc_us-gaap_OperatingIncomeLoss_019cd4a4-7509-7971-b285-b03f10565edd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_019cd4a4-7509-744e-b87f-6fc1a3b02d33" 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_019cd4a4-7509-7efe-87ab-e519804dabe4" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_019cd4a4-7509-744e-b87f-6fc1a3b02d33" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019cd4a4-7509-77d6-a801-30d0cc9a9853" 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_019cd4a4-7509-72f8-88dd-b999c567ea85" 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_019cd4a4-7509-77d6-a801-30d0cc9a9853" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019cd4a4-7509-72f8-88dd-b999c567ea85" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019cd4a4-7509-754b-8f06-367279b0cbb9" 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_019cd4a4-7509-77d6-a801-30d0cc9a9853" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019cd4a4-7509-754b-8f06-367279b0cbb9" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="simple" xlink:href="rklb-20260331.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019cd4a4-7509-7e4c-8d9e-b5eb10ca98c3" 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_019cd4a4-7509-7986-a22e-8d7f1b13a42b" 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_019cd4a4-7509-7e4c-8d9e-b5eb10ca98c3" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_019cd4a4-7509-7986-a22e-8d7f1b13a42b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_019cd4a4-7509-784f-9b3c-619e6f88a196" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019cd4a4-7509-7e4c-8d9e-b5eb10ca98c3" xlink:to="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_019cd4a4-7509-784f-9b3c-619e6f88a196" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_019cd4a4-7509-7085-936b-8bc7333dd585" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019cd4a4-7509-7e4c-8d9e-b5eb10ca98c3" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_019cd4a4-7509-7085-936b-8bc7333dd585" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireMarketableSecurities_019cd4a4-7509-789d-a60b-917180515523" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireMarketableSecurities"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019cd4a4-7509-7e4c-8d9e-b5eb10ca98c3" xlink:to="loc_us-gaap_PaymentsToAcquireMarketableSecurities_019cd4a4-7509-789d-a60b-917180515523" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities_019cd4a4-7509-70bf-b923-c379cf498381" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019cd4a4-7509-7e4c-8d9e-b5eb10ca98c3" xlink:to="loc_us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities_019cd4a4-7509-70bf-b923-c379cf498381" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" 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_ProfitLoss_019cd4a4-7509-77c6-8e43-b5785a07f36b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" xlink:to="loc_us-gaap_ProfitLoss_019cd4a4-7509-77c6-8e43-b5785a07f36b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_019cd4a4-7509-743b-9e6e-fd8d30df9e55" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" xlink:to="loc_us-gaap_DepreciationAndAmortization_019cd4a4-7509-743b-9e6e-fd8d30df9e55" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_019cd4a4-7509-7b6d-b908-041e79749881" 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_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" xlink:to="loc_us-gaap_ShareBasedCompensation_019cd4a4-7509-7b6d-b908-041e79749881" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets1_019cd4a4-7509-7049-9697-ca334c43e8ab" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnDispositionOfAssets1"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets1_019cd4a4-7509-7049-9697-ca334c43e8ab" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts_019cd4a4-7509-718b-923e-65cedb6e924d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AmortizationOfFinancingCosts"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" xlink:to="loc_us-gaap_AmortizationOfFinancingCosts_019cd4a4-7509-718b-923e-65cedb6e924d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncashContributionExpense_019cd4a4-7509-7fb1-8e4c-1cab11d608d2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NoncashContributionExpense"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" xlink:to="loc_us-gaap_NoncashContributionExpense_019cd4a4-7509-7fb1-8e4c-1cab11d608d2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_019cd4a4-7509-7604-8dd1-c5f745465691" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_019cd4a4-7509-7604-8dd1-c5f745465691" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_019cd4a4-7509-7e19-9af4-cf965c7765aa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" xlink:to="loc_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_019cd4a4-7509-7e19-9af4-cf965c7765aa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_019cd4a4-7509-7fe0-8483-1031fec5300c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" xlink:to="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_019cd4a4-7509-7fe0-8483-1031fec5300c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_019cd4a4-7509-791d-af16-d6a80e8fb8c1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_019cd4a4-7509-791d-af16-d6a80e8fb8c1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInContractWithCustomerAsset_019cd4a4-7509-724f-a78c-fafc1d368b00" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerAsset"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" xlink:to="loc_us-gaap_IncreaseDecreaseInContractWithCustomerAsset_019cd4a4-7509-724f-a78c-fafc1d368b00" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_019cd4a4-7509-7e1a-8d02-018dee290dcb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInInventories"/>
    <link:calculationArc order="12" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_019cd4a4-7509-7e1a-8d02-018dee290dcb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_019cd4a4-7509-7a6e-8815-fdc59ce155e2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
    <link:calculationArc order="13" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_019cd4a4-7509-7a6e-8815-fdc59ce155e2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_019cd4a4-7509-7567-a7f6-22a9a5d967f7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentAssets"/>
    <link:calculationArc order="14" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_019cd4a4-7509-7567-a7f6-22a9a5d967f7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableTrade_019cd4a4-7509-70ff-afe6-e82ce7e61580" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsPayableTrade"/>
    <link:calculationArc order="15" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableTrade_019cd4a4-7509-70ff-afe6-e82ce7e61580" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_019cd4a4-7509-787a-bcd9-f9ffa7c63896" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities"/>
    <link:calculationArc order="16" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_019cd4a4-7509-787a-bcd9-f9ffa7c63896" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_019cd4a4-7509-7131-b8f2-580febb2beec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities"/>
    <link:calculationArc order="17" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" xlink:to="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_019cd4a4-7509-7131-b8f2-580febb2beec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_019cd4a4-7509-7eef-8291-be5b9bc35b11" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerLiability"/>
    <link:calculationArc order="18" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" xlink:to="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_019cd4a4-7509-7eef-8291-be5b9bc35b11" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherCurrentLiabilities_019cd4a4-7509-740a-86aa-c3c19b8f79e6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOtherCurrentLiabilities"/>
    <link:calculationArc order="19" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherCurrentLiabilities_019cd4a4-7509-740a-86aa-c3c19b8f79e6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_IncreaseDecreaseInNonCurrentLeaseLiabilities_019cd4a4-7509-7255-baea-ace35976b0f3" xlink:href="rklb-20260331.xsd#rklb_IncreaseDecreaseInNonCurrentLeaseLiabilities"/>
    <link:calculationArc order="20" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" xlink:to="loc_rklb_IncreaseDecreaseInNonCurrentLeaseLiabilities_019cd4a4-7509-7255-baea-ace35976b0f3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities_019cd4a4-7509-7193-9a8a-b01be697b684" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities"/>
    <link:calculationArc order="21" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7901-8bb5-295465d8069a" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities_019cd4a4-7509-7193-9a8a-b01be697b684" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019cd4a4-7509-7e33-9ab4-5e9ff1524aac" 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_ProceedsFromIssuanceOfCommonStock_019cd4a4-7509-7328-a643-b37256b22d37" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019cd4a4-7509-7e33-9ab4-5e9ff1524aac" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_019cd4a4-7509-7328-a643-b37256b22d37" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfStockIssuanceCosts_019cd4a4-7509-794b-ab87-d13580b4f246" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsOfStockIssuanceCosts"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019cd4a4-7509-7e33-9ab4-5e9ff1524aac" xlink:to="loc_us-gaap_PaymentsOfStockIssuanceCosts_019cd4a4-7509-794b-ab87-d13580b4f246" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromStockOptionsExercised_019cd4a4-7509-7a5f-9d8a-21f51a4db15d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromStockOptionsExercised"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019cd4a4-7509-7e33-9ab4-5e9ff1524aac" xlink:to="loc_us-gaap_ProceedsFromStockOptionsExercised_019cd4a4-7509-7a5f-9d8a-21f51a4db15d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromRepaymentOfLoansByEmployeeStockOwnershipPlans_019cd4a4-7509-76df-894a-854bb78098a3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromRepaymentOfLoansByEmployeeStockOwnershipPlans"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019cd4a4-7509-7e33-9ab4-5e9ff1524aac" xlink:to="loc_us-gaap_ProceedsFromRepaymentOfLoansByEmployeeStockOwnershipPlans_019cd4a4-7509-76df-894a-854bb78098a3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_ProceedsFromSaleOfEmployeesRestrictedStockUnitsToCoverTaxes_019cd4a4-7509-7506-a6d0-ac571ae55442" xlink:href="rklb-20260331.xsd#rklb_ProceedsFromSaleOfEmployeesRestrictedStockUnitsToCoverTaxes"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019cd4a4-7509-7e33-9ab4-5e9ff1524aac" xlink:to="loc_rklb_ProceedsFromSaleOfEmployeesRestrictedStockUnitsToCoverTaxes_019cd4a4-7509-7506-a6d0-ac571ae55442" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings_019cd4a4-7509-7d57-9eac-f076604cbbd5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019cd4a4-7509-7e33-9ab4-5e9ff1524aac" xlink:to="loc_us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings_019cd4a4-7509-7d57-9eac-f076604cbbd5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfSecuredDebt_019cd4a4-7509-70ab-8fb7-3c3e459823ac" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromIssuanceOfSecuredDebt"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019cd4a4-7509-7e33-9ab4-5e9ff1524aac" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfSecuredDebt_019cd4a4-7509-70ab-8fb7-3c3e459823ac" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfSecuredDebt_019cd4a4-7509-7401-89cd-51acc59c5569" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepaymentsOfSecuredDebt"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019cd4a4-7509-7e33-9ab4-5e9ff1524aac" xlink:to="loc_us-gaap_RepaymentsOfSecuredDebt_019cd4a4-7509-7401-89cd-51acc59c5569" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtIssuanceCosts_019cd4a4-7509-7b93-b54d-6a52c35ed1ec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsOfDebtIssuanceCosts"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019cd4a4-7509-7e33-9ab4-5e9ff1524aac" xlink:to="loc_us-gaap_PaymentsOfDebtIssuanceCosts_019cd4a4-7509-7b93-b54d-6a52c35ed1ec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeasePrincipalPayments_019cd4a4-7509-701b-9020-cda9a85d82e6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeasePrincipalPayments"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019cd4a4-7509-7e33-9ab4-5e9ff1524aac" xlink:to="loc_us-gaap_FinanceLeasePrincipalPayments_019cd4a4-7509-701b-9020-cda9a85d82e6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019cd4a4-7509-79cc-8164-d53530c0d952" 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_019cd4a4-7509-7a72-8196-3a4f47f905ec" 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_019cd4a4-7509-79cc-8164-d53530c0d952" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019cd4a4-7509-7a72-8196-3a4f47f905ec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019cd4a4-7509-74cc-91f7-f292af906310" 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_019cd4a4-7509-79cc-8164-d53530c0d952" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019cd4a4-7509-74cc-91f7-f292af906310" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019cd4a4-7509-7e62-b509-cca27436bb52" 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_019cd4a4-7509-79cc-8164-d53530c0d952" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019cd4a4-7509-7e62-b509-cca27436bb52" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019cd4a4-7509-712b-96b7-0921d08c6ebf" 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_019cd4a4-7509-79cc-8164-d53530c0d952" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019cd4a4-7509-712b-96b7-0921d08c6ebf" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/BUSINESSCOMBINATIONScheduleofEstimatesFairValueofAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="simple" xlink:href="rklb-20260331.xsd#BUSINESSCOMBINATIONScheduleofEstimatesFairValueofAssetsAcquiredandLiabilitiesAssumedDetails"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/BUSINESSCOMBINATIONScheduleofEstimatesFairValueofAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019cd4a4-7509-71f3-bb9c-76c7d941ff7f" 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_019cd4a4-7509-7c3f-ae40-4f4e2c5818f7" 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_019cd4a4-7509-71f3-bb9c-76c7d941ff7f" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_019cd4a4-7509-7c3f-ae40-4f4e2c5818f7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_019cd4a4-7509-78d4-8567-5ef274be45cc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019cd4a4-7509-71f3-bb9c-76c7d941ff7f" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_019cd4a4-7509-78d4-8567-5ef274be45cc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_BusinessCombinationRecognizedAssetAcquiredContractAsset_019cd4a4-7509-76bb-8076-97aae86f8515" xlink:href="rklb-20260331.xsd#rklb_BusinessCombinationRecognizedAssetAcquiredContractAsset"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019cd4a4-7509-71f3-bb9c-76c7d941ff7f" xlink:to="loc_rklb_BusinessCombinationRecognizedAssetAcquiredContractAsset_019cd4a4-7509-76bb-8076-97aae86f8515" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_019cd4a4-7509-76de-aeea-7aa7dc90b488" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019cd4a4-7509-71f3-bb9c-76c7d941ff7f" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_019cd4a4-7509-76de-aeea-7aa7dc90b488" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_019cd4a4-7509-776c-8a4c-4505af91a05c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019cd4a4-7509-71f3-bb9c-76c7d941ff7f" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_019cd4a4-7509-776c-8a4c-4505af91a05c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_019cd4a4-7509-72cf-a0af-6dda23c7a63d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019cd4a4-7509-71f3-bb9c-76c7d941ff7f" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_019cd4a4-7509-72cf-a0af-6dda23c7a63d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_019cd4a4-7509-7bac-83af-d38250a1a3c4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019cd4a4-7509-71f3-bb9c-76c7d941ff7f" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_019cd4a4-7509-7bac-83af-d38250a1a3c4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseAssetsOperatingLeases_019cd4a4-7509-7986-aeab-06f7e7848645" xlink:href="rklb-20260331.xsd#rklb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseAssetsOperatingLeases"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019cd4a4-7509-71f3-bb9c-76c7d941ff7f" xlink:to="loc_rklb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseAssetsOperatingLeases_019cd4a4-7509-7986-aeab-06f7e7848645" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_019cd4a4-7509-7348-86ad-61d8ea920bf8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019cd4a4-7509-71f3-bb9c-76c7d941ff7f" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_019cd4a4-7509-7348-86ad-61d8ea920bf8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_019cd4a4-7509-72c8-b04b-63d6985b18b8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019cd4a4-7509-71f3-bb9c-76c7d941ff7f" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_019cd4a4-7509-72c8-b04b-63d6985b18b8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedExpenses_019cd4a4-7509-7c7f-971a-5853e2a71dac" xlink:href="rklb-20260331.xsd#rklb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedExpenses"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019cd4a4-7509-71f3-bb9c-76c7d941ff7f" xlink:to="loc_rklb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedExpenses_019cd4a4-7509-7c7f-971a-5853e2a71dac" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEmployeeBenefitsPayable_019cd4a4-7509-7026-a656-aa5ef0797c08" xlink:href="rklb-20260331.xsd#rklb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEmployeeBenefitsPayable"/>
    <link:calculationArc order="12" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019cd4a4-7509-71f3-bb9c-76c7d941ff7f" xlink:to="loc_rklb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEmployeeBenefitsPayable_019cd4a4-7509-7026-a656-aa5ef0797c08" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue_019cd4a4-7509-755d-848a-3b608945bf03" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue"/>
    <link:calculationArc order="13" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019cd4a4-7509-71f3-bb9c-76c7d941ff7f" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue_019cd4a4-7509-755d-848a-3b608945bf03" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther_019cd4a4-7509-74c2-95b9-04cf3e132da1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther"/>
    <link:calculationArc order="14" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019cd4a4-7509-71f3-bb9c-76c7d941ff7f" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther_019cd4a4-7509-74c2-95b9-04cf3e132da1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_BusinessCombinationRecognizedLiabilityAssumedNonCurrentOperatingLeaseLiabilities_019cd4a4-7509-7f7a-827b-18296eabc878" xlink:href="rklb-20260331.xsd#rklb_BusinessCombinationRecognizedLiabilityAssumedNonCurrentOperatingLeaseLiabilities"/>
    <link:calculationArc order="15" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019cd4a4-7509-71f3-bb9c-76c7d941ff7f" xlink:to="loc_rklb_BusinessCombinationRecognizedLiabilityAssumedNonCurrentOperatingLeaseLiabilities_019cd4a4-7509-7f7a-827b-18296eabc878" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_019cd4a4-7509-747c-8f78-b95645b9553c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities"/>
    <link:calculationArc order="16" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019cd4a4-7509-71f3-bb9c-76c7d941ff7f" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_019cd4a4-7509-747c-8f78-b95645b9553c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_019cd4a4-7509-77e4-90fd-5e820488c5f5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_019cd4a4-7509-7b87-bf73-946356ad7193" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireBusinessesGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferred1_019cd4a4-7509-77e4-90fd-5e820488c5f5" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_019cd4a4-7509-7b87-bf73-946356ad7193" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_019cd4a4-7509-72df-bfd9-e850cd96037c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferred1_019cd4a4-7509-77e4-90fd-5e820488c5f5" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_019cd4a4-7509-72df-bfd9-e850cd96037c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_019cd4a4-7509-72e1-b685-24bba05d1b6a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferred1_019cd4a4-7509-77e4-90fd-5e820488c5f5" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_019cd4a4-7509-72e1-b685-24bba05d1b6a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_019cd4a4-7509-745f-870f-81ca83c9e2b8" 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_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019cd4a4-7509-73bf-8c10-0b63d44b0e5d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_019cd4a4-7509-745f-870f-81ca83c9e2b8" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_019cd4a4-7509-73bf-8c10-0b63d44b0e5d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_019cd4a4-7509-77f6-82ab-e7b7e1ff6f2a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_019cd4a4-7509-745f-870f-81ca83c9e2b8" xlink:to="loc_us-gaap_Goodwill_019cd4a4-7509-77f6-82ab-e7b7e1ff6f2a" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/CASHANDCASHEQUIVALENTSANDMARKETABLESECURITIESScheduleofCashandCashEquivalentsandMarketableSecuritiesDetails" xlink:type="simple" xlink:href="rklb-20260331.xsd#CASHANDCASHEQUIVALENTSANDMARKETABLESECURITIESScheduleofCashandCashEquivalentsandMarketableSecuritiesDetails"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/CASHANDCASHEQUIVALENTSANDMARKETABLESECURITIESScheduleofCashandCashEquivalentsandMarketableSecuritiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_rklb_CashAndCashEquivalentsAndMarketableSecurities_019cd4a4-75cb-7c28-b108-8fad2de4f81b" xlink:href="rklb-20260331.xsd#rklb_CashAndCashEquivalentsAndMarketableSecurities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesNoncurrent_019cd4a4-75cb-7c69-9ad8-335a08d3e8a4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MarketableSecuritiesNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_rklb_CashAndCashEquivalentsAndMarketableSecurities_019cd4a4-75cb-7c28-b108-8fad2de4f81b" xlink:to="loc_us-gaap_MarketableSecuritiesNoncurrent_019cd4a4-75cb-7c69-9ad8-335a08d3e8a4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesCurrent_019cd4a4-75cb-73bd-b772-3618047575af" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MarketableSecuritiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_rklb_CashAndCashEquivalentsAndMarketableSecurities_019cd4a4-75cb-7c28-b108-8fad2de4f81b" xlink:to="loc_us-gaap_MarketableSecuritiesCurrent_019cd4a4-75cb-73bd-b772-3618047575af" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019cd4a4-75cb-7bc9-b235-3b854de2c361" 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_rklb_CashAndCashEquivalentsAndMarketableSecurities_019cd4a4-75cb-7c28-b108-8fad2de4f81b" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019cd4a4-75cb-7bc9-b235-3b854de2c361" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/CASHANDCASHEQUIVALENTSANDMARKETABLESECURITIESScheduleofContractualMaturitiesofMarketableSecuritiesDetails" xlink:type="simple" xlink:href="rklb-20260331.xsd#CASHANDCASHEQUIVALENTSANDMARKETABLESECURITIESScheduleofContractualMaturitiesofMarketableSecuritiesDetails"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/CASHANDCASHEQUIVALENTSANDMARKETABLESECURITIESScheduleofContractualMaturitiesofMarketableSecuritiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_019cd4a4-75cb-725a-9a12-b8f96396d30e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_DebtSecuritiesAvailableForSaleAmortizedCostMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo_019cd4a4-75cb-74c4-b93e-d28c90d1415a" xlink:href="rklb-20260331.xsd#rklb_DebtSecuritiesAvailableForSaleAmortizedCostMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_019cd4a4-75cb-725a-9a12-b8f96396d30e" xlink:to="loc_rklb_DebtSecuritiesAvailableForSaleAmortizedCostMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo_019cd4a4-75cb-74c4-b93e-d28c90d1415a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_019cd4a4-75cb-7765-b9b3-8d1b852f9bc5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_019cd4a4-75cb-725a-9a12-b8f96396d30e" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_019cd4a4-75cb-7765-b9b3-8d1b852f9bc5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019cd4a4-75cb-7424-b6e5-25eb75bf81e4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_019cd4a4-75cb-750b-a00d-3b38fab9ff38" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019cd4a4-75cb-7424-b6e5-25eb75bf81e4" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_019cd4a4-75cb-750b-a00d-3b38fab9ff38" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_DebtSecuritiesAvailableForSaleFairValueMaturityAllocatedAndSingleMaturityDateYearOneThroughTwo_019cd4a4-75cb-7277-b9d0-f524c91f90d2" xlink:href="rklb-20260331.xsd#rklb_DebtSecuritiesAvailableForSaleFairValueMaturityAllocatedAndSingleMaturityDateYearOneThroughTwo"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019cd4a4-75cb-7424-b6e5-25eb75bf81e4" xlink:to="loc_rklb_DebtSecuritiesAvailableForSaleFairValueMaturityAllocatedAndSingleMaturityDateYearOneThroughTwo_019cd4a4-75cb-7277-b9d0-f524c91f90d2" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSScheduleofFinancialAssetsandLiabilitiesMeasuredatFairValueonaRecurringBasisDetails" xlink:type="simple" xlink:href="rklb-20260331.xsd#FAIRVALUEOFFINANCIALINSTRUMENTSScheduleofFinancialAssetsandLiabilitiesMeasuredatFairValueonaRecurringBasisDetails"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/FAIRVALUEOFFINANCIALINSTRUMENTSScheduleofFinancialAssetsandLiabilitiesMeasuredatFairValueonaRecurringBasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_019cd4a4-75cb-7177-8452-4e4990776be0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiabilityNoncurrent_019cd4a4-75cb-7fa7-bc3d-d84bb2a603d0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationContingentConsiderationLiabilityNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosure_019cd4a4-75cb-7177-8452-4e4990776be0" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiabilityNoncurrent_019cd4a4-75cb-7fa7-bc3d-d84bb2a603d0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_019cd4a4-75cb-7200-b57b-ac1b9443e7b1" 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_MarketableSecuritiesNoncurrent_019cd4a4-75cb-7437-900a-b1b76f34aec5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MarketableSecuritiesNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019cd4a4-75cb-7200-b57b-ac1b9443e7b1" xlink:to="loc_us-gaap_MarketableSecuritiesNoncurrent_019cd4a4-75cb-7437-900a-b1b76f34aec5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesCurrent_019cd4a4-75cb-7042-a2db-00ce489a8629" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MarketableSecuritiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019cd4a4-75cb-7200-b57b-ac1b9443e7b1" xlink:to="loc_us-gaap_MarketableSecuritiesCurrent_019cd4a4-75cb-7042-a2db-00ce489a8629" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_019cd4a4-75cb-7e6d-970b-96cd3c8d5e06" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure_019cd4a4-75cb-7200-b57b-ac1b9443e7b1" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_019cd4a4-75cb-7e6d-970b-96cd3c8d5e06" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/INVENTORIESDetails" xlink:type="simple" xlink:href="rklb-20260331.xsd#INVENTORIESDetails"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/INVENTORIESDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_019cd4a4-75cb-7c18-8314-9eead87439f1" 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_InventoryFinishedGoods_019cd4a4-75cb-7e76-9a42-73e7ebc2385d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryFinishedGoods"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_019cd4a4-75cb-7c18-8314-9eead87439f1" xlink:to="loc_us-gaap_InventoryFinishedGoods_019cd4a4-75cb-7e76-9a42-73e7ebc2385d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWorkInProcess_019cd4a4-75cb-7730-b813-063d37bea917" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryWorkInProcess"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_019cd4a4-75cb-7c18-8314-9eead87439f1" xlink:to="loc_us-gaap_InventoryWorkInProcess_019cd4a4-75cb-7730-b813-063d37bea917" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryRawMaterials_019cd4a4-75cb-75e5-aa95-09f26d6903dd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryRawMaterials"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_019cd4a4-75cb-7c18-8314-9eead87439f1" xlink:to="loc_us-gaap_InventoryRawMaterials_019cd4a4-75cb-75e5-aa95-09f26d6903dd" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/PREPAIDSANDOTHERCURRENTASSETSDetails" xlink:type="simple" xlink:href="rklb-20260331.xsd#PREPAIDSANDOTHERCURRENTASSETSDetails"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/PREPAIDSANDOTHERCURRENTASSETSDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019cd4a4-75cb-7abe-ace6-d8c73d1408f2" 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_us-gaap_PrepaidExpenseCurrent_019cd4a4-75cb-7216-977f-8132cf098cf5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PrepaidExpenseCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019cd4a4-75cb-7abe-ace6-d8c73d1408f2" xlink:to="loc_us-gaap_PrepaidExpenseCurrent_019cd4a4-75cb-7216-977f-8132cf098cf5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrantsReceivableCurrent_019cd4a4-75cb-7cd1-9a36-527073f372e0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GrantsReceivableCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019cd4a4-75cb-7abe-ace6-d8c73d1408f2" xlink:to="loc_us-gaap_GrantsReceivableCurrent_019cd4a4-75cb-7cd1-9a36-527073f372e0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivablesNetCurrent_019cd4a4-75cb-7e75-99bf-e9d901509d77" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReceivablesNetCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019cd4a4-75cb-7abe-ace6-d8c73d1408f2" xlink:to="loc_us-gaap_ReceivablesNetCurrent_019cd4a4-75cb-7e75-99bf-e9d901509d77" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_019cd4a4-75cb-7ba1-af00-a8568684ded1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019cd4a4-75cb-7abe-ace6-d8c73d1408f2" xlink:to="loc_us-gaap_OtherAssetsCurrent_019cd4a4-75cb-7ba1-af00-a8568684ded1" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/PROPERTYPLANTANDEQUIPMENTNETScheduleofPropertyPlantandEquipmentNetDetail" xlink:type="simple" xlink:href="rklb-20260331.xsd#PROPERTYPLANTANDEQUIPMENTNETScheduleofPropertyPlantandEquipmentNetDetail"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/PROPERTYPLANTANDEQUIPMENTNETScheduleofPropertyPlantandEquipmentNetDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_019cd4a4-75cb-7c24-a718-3fc294d0c5da" 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_019cd4a4-75cb-7654-aeef-d991467868c4" 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_019cd4a4-75cb-7c24-a718-3fc294d0c5da" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_019cd4a4-75cb-7654-aeef-d991467868c4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_019cd4a4-75cb-79b4-8afe-1f3d3078f19a" 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_019cd4a4-75cb-7c24-a718-3fc294d0c5da" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_019cd4a4-75cb-79b4-8afe-1f3d3078f19a" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/GOODWILLANDINTANGIBLEASSETSNETScheduleofComponentsofIntangibleAssetsDetails" xlink:type="simple" xlink:href="rklb-20260331.xsd#GOODWILLANDINTANGIBLEASSETSNETScheduleofComponentsofIntangibleAssetsDetails"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/GOODWILLANDINTANGIBLEASSETSNETScheduleofComponentsofIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_019d1f42-2342-7899-a938-e9f078779df4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_019d1f42-2342-76a7-a7c5-bbe033b89215" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_019d1f42-2342-7899-a938-e9f078779df4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_019d1f42-2342-76a7-a7c5-bbe033b89215" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_019d1f42-2342-7970-99c9-4a40f773b206" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_019d1f42-2342-7899-a938-e9f078779df4" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_019d1f42-2342-7970-99c9-4a40f773b206" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019d1f42-2342-7e37-93f4-0e273f3faac9" 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_FiniteLivedIntangibleAssetsGross_019d1f42-2342-76c4-b119-8128aea48e1e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019d1f42-2342-7e37-93f4-0e273f3faac9" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_019d1f42-2342-76c4-b119-8128aea48e1e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019d1f42-2342-73ef-8bc1-fe48a1cdda9f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019d1f42-2342-7e37-93f4-0e273f3faac9" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019d1f42-2342-73ef-8bc1-fe48a1cdda9f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019d1f42-2342-78f2-9cae-ff4394e43335" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_019d1f42-2342-7f25-b822-b04093933341" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019d1f42-2342-78f2-9cae-ff4394e43335" xlink:to="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_019d1f42-2342-7f25-b822-b04093933341" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019d1f42-2342-7f32-aa2c-fe96b84e48e1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019d1f42-2342-78f2-9cae-ff4394e43335" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019d1f42-2342-7f32-aa2c-fe96b84e48e1" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/GOODWILLANDINTANGIBLEASSETSNETScheduleofComponentsofIntangibleAssetsDetails_1" xlink:type="simple" xlink:href="rklb-20260331.xsd#GOODWILLANDINTANGIBLEASSETSNETScheduleofComponentsofIntangibleAssetsDetails_1"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/GOODWILLANDINTANGIBLEASSETSNETScheduleofComponentsofIntangibleAssetsDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019d1f42-2342-7803-9d19-be4fdd5fe0d1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_019d1f42-2342-75c4-8fa3-9f371f13d30b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019d1f42-2342-7803-9d19-be4fdd5fe0d1" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_019d1f42-2342-75c4-8fa3-9f371f13d30b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019d1f42-2342-72b1-84a5-a0c63e51c182" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019d1f42-2342-7803-9d19-be4fdd5fe0d1" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019d1f42-2342-72b1-84a5-a0c63e51c182" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rocketlabusa.com/role/GOODWILLANDINTANGIBLEASSETSNETScheduleofEstimatedFutureAmortizationExpenseRelatedtoFiniteIntangibleAssetsDetails" xlink:type="simple" xlink:href="rklb-20260331.xsd#GOODWILLANDINTANGIBLEASSETSNETScheduleofEstimatedFutureAmortizationExpenseRelatedtoFiniteIntangibleAssetsDetails"/>
  <link:calculationLink xlink:role="http://www.rocketlabusa.com/role/GOODWILLANDINTANGIBLEASSETSNETScheduleofEstimatedFutureAmortizationExpenseRelatedtoFiniteIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019cd4a4-75cb-7948-b86a-2426fdcf44f9" 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_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_019cd4a4-75cb-7aeb-8908-8f0db7b622d5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019cd4a4-75cb-7948-b86a-2426fdcf44f9" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_019cd4a4-75cb-7aeb-8908-8f0db7b622d5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_019cd4a4-75cb-7478-9c45-28901ce49fc6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019cd4a4-75cb-7948-b86a-2426fdcf44f9" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_019cd4a4-75cb-7478-9c45-28901ce49fc6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_019cd4a4-75cb-78bd-bb50-2e1ab918c78f" 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_019cd4a4-75cb-7948-b86a-2426fdcf44f9" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_019cd4a4-75cb-78bd-bb50-2e1ab918c78f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_019cd4a4-75cb-7641-b149-d70138f9a95c" 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_019cd4a4-75cb-7948-b86a-2426fdcf44f9" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_019cd4a4-75cb-7641-b149-d70138f9a95c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_019cd4a4-75cb-701a-bdc0-4d1c7bc81b94" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019cd4a4-75cb-7948-b86a-2426fdcf44f9" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_019cd4a4-75cb-701a-bdc0-4d1c7bc81b94" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rklb_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour_019cd4a4-75cb-76c4-892e-62c8ffcb1f95" xlink:href="rklb-20260331.xsd#rklb_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019cd4a4-75cb-7948-b86a-2426fdcf44f9" xlink:to="loc_rklb_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour_019cd4a4-75cb-76c4-892e-62c8ffcb1f95" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
