content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
    <headerData>
      <submissionType>144</submissionType>
      <filerInfo>
        <filer>
          <filerCredentials>
            <cik>0001693758</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
  
      </filerInfo>
    </headerData>
    <formData>
      <issuerInfo>
        <issuerCik>0000868857</issuerCik>
        <issuerName>AECOM</issuerName>
        <secFileNumber>000-52423</secFileNumber>
        <issuerAddress>
          <com:street1>13355 NOEL ROAD</com:street1>
          <com:street2>SUITE 400</com:street2>
          <com:city>DALLAS</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>75240</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>(972) 788-1000</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Kapoor Gaurav</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Officer</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>COMMON</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>MERRILL LYNCH</name>
          <address>
            <com:street1>3455 PEACHTREE RD NE</com:street1>
            <com:street2>SUITE 1000</com:street2>
            <com:city>ATLANTA</com:city>
            <com:stateOrCountry>GA</com:stateOrCountry>
            <com:zipCode>30326</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>42400</noOfUnitsSold>
        <aggregateMarketValue>4890550.32</aggregateMarketValue>
        <noOfUnitsOutstanding>134066746</noOfUnitsOutstanding>
        <approxSaleDate>11/06/2024</approxSaleDate>
        <securitiesExchangeName>NEW YORK</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>COMMON</securitiesClassTitle>
        <acquiredDate>12/15/2017</acquiredDate>
        <natureOfAcquisitionTransaction>RESTRICTED STOCK UNIT VEST</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>AECOM</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>1583</amountOfSecuritiesAcquired>
        <paymentDate>12/15/2017</paymentDate>
        <natureOfPayment>COMPENSATORY PAYMENT</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>COMMON</securitiesClassTitle>
        <acquiredDate>12/15/2017</acquiredDate>
        <natureOfAcquisitionTransaction>PERFORMANCE STOCK UNIT VEST</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>AECOM</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>1978</amountOfSecuritiesAcquired>
        <paymentDate>12/15/2017</paymentDate>
        <natureOfPayment>COMPENSATORY PAYMENT</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>COMMON</securitiesClassTitle>
        <acquiredDate>12/15/2018</acquiredDate>
        <natureOfAcquisitionTransaction>RESTRICTED STOCK UNIT VEST</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>AECOM</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>1616</amountOfSecuritiesAcquired>
        <paymentDate>12/15/2018</paymentDate>
        <natureOfPayment>COMPENSATORY PAYMENT</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>COMMON</securitiesClassTitle>
        <acquiredDate>12/15/2018</acquiredDate>
        <natureOfAcquisitionTransaction>PERFORMANCE STOCK UNIT VEST</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>COMPENSATORY PAYMENT</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>2020</amountOfSecuritiesAcquired>
        <paymentDate>12/15/2018</paymentDate>
        <natureOfPayment>COMPENSATORY PAYMENT</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>COMMON</securitiesClassTitle>
        <acquiredDate>12/15/2019</acquiredDate>
        <natureOfAcquisitionTransaction>RESTRICTED STOCK UNIT VEST</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>AECOM</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>3000</amountOfSecuritiesAcquired>
        <paymentDate>12/15/2019</paymentDate>
        <natureOfPayment>COMPENSATORY PAYMENT</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>COMMON</securitiesClassTitle>
        <acquiredDate>12/15/2019</acquiredDate>
        <natureOfAcquisitionTransaction>PERFORMANCE STOCK UNIT VEST</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>AECOM</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>3372</amountOfSecuritiesAcquired>
        <paymentDate>12/15/2019</paymentDate>
        <natureOfPayment>COMPENSATORY PAYMENT</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>COMMON</securitiesClassTitle>
        <acquiredDate>12/15/2020</acquiredDate>
        <natureOfAcquisitionTransaction>RESTRICTED STOCK UNIT VEST</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>AECOM</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>2618</amountOfSecuritiesAcquired>
        <paymentDate>12/15/2020</paymentDate>
        <natureOfPayment>COMPENSATORY PAYMENT</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>COMMON</securitiesClassTitle>
        <acquiredDate>12/18/2020</acquiredDate>
        <natureOfAcquisitionTransaction>PERFORMANCE STOCK UNIT VEST</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>AECOM</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>2841</amountOfSecuritiesAcquired>
        <paymentDate>12/18/2020</paymentDate>
        <natureOfPayment>COMPENSATORY PAYMENT</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>COMMON</securitiesClassTitle>
        <acquiredDate>12/17/2021</acquiredDate>
        <natureOfAcquisitionTransaction>RESTRICTED STOCK UNIT VEST</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>AECOM</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>4354</amountOfSecuritiesAcquired>
        <paymentDate>12/17/2021</paymentDate>
        <natureOfPayment>COMPENSATORY PAYMENT</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>COMMON</securitiesClassTitle>
        <acquiredDate>12/17/2021</acquiredDate>
        <natureOfAcquisitionTransaction>PERFORMANCE STOCK UNIT VEST</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>AECOM</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>8911</amountOfSecuritiesAcquired>
        <paymentDate>12/17/2021</paymentDate>
        <natureOfPayment>COMPENSATORY PAYMENT</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>COMMON</securitiesClassTitle>
        <acquiredDate>12/16/2022</acquiredDate>
        <natureOfAcquisitionTransaction>RESTRICTED STOCK UNIT VEST</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>AECOM</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>3369</amountOfSecuritiesAcquired>
        <paymentDate>12/16/2022</paymentDate>
        <natureOfPayment>COMPENSATORY PAYMENT</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>COMMON</securitiesClassTitle>
        <acquiredDate>12/16/2022</acquiredDate>
        <natureOfAcquisitionTransaction>PERFORMANCE STOCK UNIT VEST</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>AECOM</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>6738</amountOfSecuritiesAcquired>
        <paymentDate>12/16/2022</paymentDate>
        <natureOfPayment>COMPENSATORY PAYMENT</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>11/06/2024</noticeDate>
        <planAdoptionDates>
          <planAdoptionDate>02/22/2023</planAdoptionDate>
        </planAdoptionDates>
        <signature>GAURAV KAPOOR</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 8933}]
text: 144
  0001693758
  XXXXXXXX
  LIVE
  0000868857
  AECOM
  000-52423
  13355 NOEL ROAD
  SUITE 400
  DALLAS
  TX
  75240
  (972) 788-1000
  Kapoor Gaurav
  Officer
  COMMON
  MERRILL LYNCH
  3455 PEACHTREE RD NE
  SUITE 1000
  ATLANTA
  GA
  30326
  42400
  4890550.32
  134066746
  11/06/2024
  NEW YORK
  COMMON
  12/15/2017
  RESTRICTED STOCK UNIT VEST
  AECOM
  N
  1583
  12/15/2017
  COMPENSATORY PAYMENT
  COMMON
  12/15/2017
  PERFORMANCE STOCK UNIT VEST
  AECOM
  N
  1978
  12/15/2017
  COMPENSATORY PAYMENT
  COMMON
  12/15/2018
  RESTRICTED STOCK UNIT VEST
  AECOM
  N
  1616
  12/15/2018
  COMPENSATORY PAYMENT
  COMMON
  12/15/2018
  PERFORMANCE STOCK UNIT VEST
  COMPENSATORY PAYMENT
  N
  2020
  12/15/2018
  COMPENSATORY PAYMENT
  COMMON
  12/15/2019
  RESTRICTED STOCK UNIT VEST
  AECOM
  N
  3000
  12/15/2019
  COMPENSATORY PAYMENT
  COMMON
  12/15/2019
  PERFORMANCE STOCK UNIT VEST
  AECOM
  N
  3372
  12/15/2019
  COMPENSATORY PAYMENT
  COMMON
  12/15/2020
  RESTRICTED STOCK UNIT VEST
  AECOM
  N
  2618
  12/15/2020
  COMPENSATORY PAYMENT
  COMMON
  12/18/2020
  PERFORMANCE STOCK UNIT VEST
  AECOM
  N
  2841
  12/18/2020
  COMPENSATORY PAYMENT
  COMMON
  12/17/2021
  RESTRICTED STOCK UNIT VEST
  AECOM
  N
  4354
  12/17/2021
  COMPENSATORY PAYMENT
  COMMON
  12/17/2021
  PERFORMANCE STOCK UNIT VEST
  AECOM
  N
  8911
  12/17/2021
  COMPENSATORY PAYMENT
  COMMON
  12/16/2022
  RESTRICTED STOCK UNIT VEST
  AECOM
  N
  3369
  12/16/2022
  COMPENSATORY PAYMENT
  COMMON
  12/16/2022
  PERFORMANCE STOCK UNIT VEST
  AECOM
  N
  6738
  12/16/2022
  COMPENSATORY PAYMENT
  Y
  11/06/2024
  02/22/2023
  GAURAV KAPOOR