content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
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  <submissionType>144</submissionType>
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  <filer>
  <filerCredentials>
  <cik>0001958061</cik>
  <ccc>XXXXXXXX</ccc>
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  <liveTestFlag>LIVE</liveTestFlag>
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  <issuerInfo>
  <issuerCik>0001824920</issuerCik>
  <issuerName>IonQ, Inc.</issuerName>
  <secFileNumber>001-39694</secFileNumber>
  <issuerAddress>
  <street1 xmlns="http://www.sec.gov/edgar/common">4505 Campus Drive</street1>
  <city xmlns="http://www.sec.gov/edgar/common">College Park</city>
  <stateOrCountry xmlns="http://www.sec.gov/edgar/common">MD</stateOrCountry>
  <zipCode xmlns="http://www.sec.gov/edgar/common">20740</zipCode>
  </issuerAddress>
  <issuerContactPhone>301-298-7997</issuerContactPhone>
  <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Alameddine Rima</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
  <relationshipsToIssuer>
  <relationshipToIssuer>Officer</relationshipToIssuer>
  </relationshipsToIssuer>
  </issuerInfo>
  <securitiesInformation>
  <securitiesClassTitle>Common Stock</securitiesClassTitle>
  <brokerOrMarketmakerDetails>
  <name>E-TRADE Financial Corporation</name>
  <address>
  <street1 xmlns="http://www.sec.gov/edgar/common">PO Box 484</street1>
  <city xmlns="http://www.sec.gov/edgar/common">Jersey City</city>
  <stateOrCountry xmlns="http://www.sec.gov/edgar/common">NJ</stateOrCountry>
  <zipCode xmlns="http://www.sec.gov/edgar/common">07303-0484</zipCode>
  </address>
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  <noOfUnitsSold>25650</noOfUnitsSold>
  <aggregateMarketValue>180576</aggregateMarketValue>
  <noOfUnitsOutstanding>214076151</noOfUnitsOutstanding>
  <approxSaleDate>09/11/2024</approxSaleDate>
  <securitiesExchangeName>NYSE</securitiesExchangeName>
  </securitiesInformation>
  <securitiesToBeSold>
  <securitiesClassTitle>Common Stock</securitiesClassTitle>
  <acquiredDate>09/10/2024</acquiredDate>
  <natureOfAcquisitionTransaction>Vesting of Restricted Stock Units - See Remarks</natureOfAcquisitionTransaction>
  <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
  <isGiftTransaction>N</isGiftTransaction>
  <amountOfSecuritiesAcquired>25650</amountOfSecuritiesAcquired>
  <paymentDate>09/10/2024</paymentDate>
  <natureOfPayment>Equity Compensation</natureOfPayment>
  </securitiesToBeSold>
  <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
  <securitiesSoldInPast3Months>
  <sellerDetails>
  <name>Rima Alameddine</name>
  <address>
  <street1 xmlns="http://www.sec.gov/edgar/common">c/o IonQ, Inc.</street1>
  <street2 xmlns="http://www.sec.gov/edgar/common">4505 Campus Drive</street2>
  <city xmlns="http://www.sec.gov/edgar/common">College Park</city>
  <stateOrCountry xmlns="http://www.sec.gov/edgar/common">MD</stateOrCountry>
  <zipCode xmlns="http://www.sec.gov/edgar/common">20740</zipCode>
  </address>
  </sellerDetails>
  <securitiesClassTitle>Common Stock</securitiesClassTitle>
  <saleDate>06/12/2024</saleDate>
  <amountOfSecuritiesSold>10565</amountOfSecuritiesSold>
  <grossProceeds>85913.53</grossProceeds>
  </securitiesSoldInPast3Months>
  <securitiesSoldInPast3Months>
  <sellerDetails>
  <name>Rima Alameddine</name>
  <address>
  <street1 xmlns="http://www.sec.gov/edgar/common">c/o IonQ, Inc.</street1>
  <street2 xmlns="http://www.sec.gov/edgar/common">4505 Campus Drive</street2>
  <city xmlns="http://www.sec.gov/edgar/common">College Park</city>
  <stateOrCountry xmlns="http://www.sec.gov/edgar/common">MD</stateOrCountry>
  <zipCode xmlns="http://www.sec.gov/edgar/common">20740</zipCode>
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  <securitiesClassTitle>Common Stock</securitiesClassTitle>
  <saleDate>06/11/2024</saleDate>
  <amountOfSecuritiesSold>9807</amountOfSecuritiesSold>
  <grossProceeds>77342.91</grossProceeds>
  </securitiesSoldInPast3Months>
  <remarks>Shares sold to cover tax withholding obligations in connection with the vesting of restricted stock units.</remarks>
  <noticeSignature>
  <noticeDate>09/10/2024</noticeDate>
  <signature>/s/ Rima Alameddine</signature>
  </noticeSignature>
  </formData>
  </edgarSubmission>
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text: 144
  0001958061
  XXXXXXXX
  LIVE
  0001824920
  IonQ, Inc.
  001-39694
  4505 Campus Drive
  College Park
  MD
  20740
  301-298-7997
  Alameddine Rima
  Officer
  Common Stock
  E-TRADE Financial Corporation
  PO Box 484
  Jersey City
  NJ
  07303-0484
  25650
  180576
  214076151
  09/11/2024
  NYSE
  Common Stock
  09/10/2024
  Vesting of Restricted Stock Units - See Remarks
  Issuer
  N
  25650
  09/10/2024
  Equity Compensation
  N
  Rima Alameddine
  c/o IonQ, Inc.
  4505 Campus Drive
  College Park
  MD
  20740
  Common Stock
  06/12/2024
  10565
  85913.53
  Rima Alameddine
  c/o IonQ, Inc.
  4505 Campus Drive
  College Park
  MD
  20740
  Common Stock
  06/11/2024
  9807
  77342.91
  Shares sold to cover tax withholding obligations in connection with the vesting of restricted stock units.
  09/10/2024
  /s/ Rima Alameddine