content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
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        <filer>
          <filerCredentials>
            <cik>0001173003</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
  
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    <formData>
      <issuerInfo>
        <issuerCik>0000052988</issuerCik>
        <issuerName>JACOBS SOLUTIONS INC.</issuerName>
        <secFileNumber>001-07463</secFileNumber>
        <issuerAddress>
          <com:street1>1999 BRYAN STREET, SUITE 3500</com:street1>
          <com:city>DALLAS</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>75201</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>214-583-8500</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>DEMETRIOU STEVEN J.</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Director</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Fidelity Brokerage Services LLC</name>
          <address>
            <com:street1>900 Salem Street</com:street1>
            <com:city>Smithfield</com:city>
            <com:stateOrCountry>RI</com:stateOrCountry>
            <com:zipCode>02917</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>7000</noOfUnitsSold>
        <aggregateMarketValue>1028160.00</aggregateMarketValue>
        <noOfUnitsOutstanding>125212831</noOfUnitsOutstanding>
        <approxSaleDate>08/01/2024</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>11/18/2023</acquiredDate>
        <natureOfAcquisitionTransaction>Restricted Stock Vesting</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>7000</amountOfSecuritiesAcquired>
        <paymentDate>11/18/2023</paymentDate>
        <natureOfPayment>Compensation</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Steven J. Demetriou</name>
          <address>
            <com:street1>1999 Bryan Street</com:street1>
            <com:street2>Suite 3500</com:street2>
            <com:city>Dallas</com:city>
            <com:stateOrCountry>TX</com:stateOrCountry>
            <com:zipCode>75201</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>05/01/2024</saleDate>
        <amountOfSecuritiesSold>7000</amountOfSecuritiesSold>
        <grossProceeds>1007020.00</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Steven J. Demetriou</name>
          <address>
            <com:street1>1999 Bryan Street</com:street1>
            <com:street2>Suite 3500</com:street2>
            <com:city>Dallas</com:city>
            <com:stateOrCountry>TX</com:stateOrCountry>
            <com:zipCode>75201</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>06/03/2024</saleDate>
        <amountOfSecuritiesSold>7000</amountOfSecuritiesSold>
        <grossProceeds>976010.00</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Steven J. Demetriou</name>
          <address>
            <com:street1>1999 Bryan Street</com:street1>
            <com:street2>Suite 3500</com:street2>
            <com:city>Dallas</com:city>
            <com:stateOrCountry>TX</com:stateOrCountry>
            <com:zipCode>75201</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>07/01/2024</saleDate>
        <amountOfSecuritiesSold>7000</amountOfSecuritiesSold>
        <grossProceeds>979580.00</grossProceeds>
      </securitiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>08/01/2024</noticeDate>
        <planAdoptionDates>
          <planAdoptionDate>11/28/2023</planAdoptionDate>
        </planAdoptionDates>
        <signature>/s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Steven Demetriou</signature>
      </noticeSignature>
    </formData>
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text: 144
  0001173003
  XXXXXXXX
  LIVE
  0000052988
  JACOBS SOLUTIONS INC.
  001-07463
  1999 BRYAN STREET, SUITE 3500
  DALLAS
  TX
  75201
  214-583-8500
  DEMETRIOU STEVEN J.
  Director
  Common
  Fidelity Brokerage Services LLC
  900 Salem Street
  Smithfield
  RI
  02917
  7000
  1028160.00
  125212831
  08/01/2024
  NYSE
  Common
  11/18/2023
  Restricted Stock Vesting
  Issuer
  N
  7000
  11/18/2023
  Compensation
  N
  Steven J. Demetriou
  1999 Bryan Street
  Suite 3500
  Dallas
  TX
  75201
  Common
  05/01/2024
  7000
  1007020.00
  Steven J. Demetriou
  1999 Bryan Street
  Suite 3500
  Dallas
  TX
  75201
  Common
  06/03/2024
  7000
  976010.00
  Steven J. Demetriou
  1999 Bryan Street
  Suite 3500
  Dallas
  TX
  75201
  Common
  07/01/2024
  7000
  979580.00
  08/01/2024
  11/28/2023
  /s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Steven Demetriou