content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
    <!-- Generated by Workiva -->
    <headerData>
      <submissionType>144</submissionType>
      <filerInfo>
        <filer>
          <filerCredentials>
            <cik>0001801331</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
  
      </filerInfo>
    </headerData>
    <formData>
      <issuerInfo>
        <issuerCik>0000073756</issuerCik>
        <issuerName>Oceaneering International, Inc.</issuerName>
        <secFileNumber>001-10945</secFileNumber>
        <issuerAddress>
          <com:street1>5875 N. Sam Houston Parkway W.</com:street1>
          <com:street2>Suite 400</com:street2>
          <com:city>Houston</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>77086</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>7133294500</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Childress Earl</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Officer</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Tanglewood Legacy Advisors, LLC</name>
          <address>
            <com:street1>One Riverway, Ste. 1550</com:street1>
            <com:city>Houston</com:city>
            <com:stateOrCountry>TX</com:stateOrCountry>
            <com:zipCode>77056</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>14600</noOfUnitsSold>
        <aggregateMarketValue>374344</aggregateMarketValue>
        <noOfUnitsOutstanding>100779554</noOfUnitsOutstanding>
        <approxSaleDate>09/26/2023</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>03/10/2020</acquiredDate>
        <natureOfAcquisitionTransaction>Open Market Purchase</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Childress Earl</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>14600</amountOfSecuritiesAcquired>
        <paymentDate>03/10/2020</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>09/26/2023</noticeDate>
        <signature>/s/ Jennifer F. Simons, Attorney-in-Fact for Earl Childress</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
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text: 144
  0001801331
  XXXXXXXX
  LIVE
  0000073756
  Oceaneering International, Inc.
  001-10945
  5875 N. Sam Houston Parkway W.
  Suite 400
  Houston
  TX
  77086
  7133294500
  Childress Earl
  Officer
  Common
  Tanglewood Legacy Advisors, LLC
  One Riverway, Ste. 1550
  Houston
  TX
  77056
  14600
  374344
  100779554
  09/26/2023
  NYSE
  Common
  03/10/2020
  Open Market Purchase
  Childress Earl
  N
  14600
  03/10/2020
  Cash
  Y
  09/26/2023
  /s/ Jennifer F. Simons, Attorney-in-Fact for Earl Childress