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>0001259746</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
      </filerInfo>
    </headerData>
    <formData>
      <issuerInfo>
        <issuerCik>0001865631</issuerCik>
        <issuerName>NEXTNAV INC.</issuerName>
        <secFileNumber>001-40985</secFileNumber>
        <issuerAddress>
          <com:street1>1775 TYSONS BLVD., 5TH FLOOR</com:street1>
          <com:city>MCLEAN</com:city>
          <com:stateOrCountry>VA</com:stateOrCountry>
          <com:zipCode>22102</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>800-775-0982</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>AQUINO PETER D</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Director</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Other</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Truist Investment Services, Inc</name>
          <address>
            <com:street1>303 Peachtree Center Ave.</com:street1>
            <com:city>Atlanta</com:city>
            <com:stateOrCountry>GA</com:stateOrCountry>
            <com:zipCode>30303</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>324074</noOfUnitsSold>
        <aggregateMarketValue>239815.00</aggregateMarketValue>
        <noOfUnitsOutstanding>107718313</noOfUnitsOutstanding>
        <approxSaleDate>06/15/2023</approxSaleDate>
        <securitiesExchangeName>NASDAQ</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Other</securitiesClassTitle>
        <acquiredDate>10/15/2020</acquiredDate>
        <natureOfAcquisitionTransaction>Private Placement</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Spartacus Acquisition Corp</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>324074</amountOfSecuritiesAcquired>
        <paymentDate>10/15/2020</paymentDate>
        <natureOfPayment>Cash/Check</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>06/08/2023</noticeDate>
        <signature>/s/ Christian Nasser, as a duly authorized representative of National Financial Services LLC, as attorney-in-fact for Peter D. Aquino</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
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text: 144
  0001259746
  XXXXXXXX
  LIVE
  0001865631
  NEXTNAV INC.
  001-40985
  1775 TYSONS BLVD., 5TH FLOOR
  MCLEAN
  VA
  22102
  800-775-0982
  AQUINO PETER D
  Director
  Other
  Truist Investment Services, Inc
  303 Peachtree Center Ave.
  Atlanta
  GA
  30303
  324074
  239815.00
  107718313
  06/15/2023
  NASDAQ
  Other
  10/15/2020
  Private Placement
  Spartacus Acquisition Corp
  N
  324074
  10/15/2020
  Cash/Check
  Y
  06/08/2023
  /s/ Christian Nasser, as a duly authorized representative of National Financial Services LLC, as attorney-in-fact for Peter D. Aquino