<?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>
          <!-- Field: Pseudo-Tag; ID: Name; Data: ONTARIO TEACHERS PENSION PLAN BOARD -->
          <cik>0000937567</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>


    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0000797721</issuerCik>
      <issuerName>VIASAT INC</issuerName>
      <secFileNumber>000-21767</secFileNumber>
      <issuerAddress>
        <com:street1>6155 El Camino Real</com:street1>
        <com:city>Carlsbad</com:city>
        <com:stateOrCountry>CA</com:stateOrCountry>
        <com:zipCode>92009</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>760-476-2200</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Ontario Teachers' Pension Plan Board</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Affiliate</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>J.P. Morgan Securities LLC</name>
        <address>
          <com:street1>390 Madison Avenue, 6th Floor</com:street1>
          <com:city>New York</com:city>
          <com:stateOrCountry>NY</com:stateOrCountry>
          <com:zipCode>10017</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>3750000</noOfUnitsSold>
      <aggregateMarketValue>41887500.00</aggregateMarketValue>
      <noOfUnitsOutstanding>129119989</noOfUnitsOutstanding>
      <approxSaleDate>02/10/2025</approxSaleDate>
      <securitiesExchangeName>Nasdaq</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <acquiredDate>05/30/2023</acquiredDate>
      <natureOfAcquisitionTransaction>Merger</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>11356776</amountOfSecuritiesAcquired>
      <paymentDate>05/30/2023</paymentDate>
      <natureOfPayment>Merger Consideration</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>02/10/2025</noticeDate>
      <signature>/s/ Jonathan Law, Managing Director, Corporate &amp; Investments Compliance</signature>
    </noticeSignature>
  </formData>
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144
0000937567
XXXXXXXX
LIVE
0000797721
VIASAT INC
000-21767
6155 El Camino Real
Carlsbad
CA
92009
760-476-2200
Ontario Teachers' Pension Plan Board
Affiliate
Common Stock
J.P. Morgan Securities LLC
390 Madison Avenue, 6th Floor
New York
NY
10017
3750000
41887500.00
129119989
02/10/2025
Nasdaq
Common Stock
05/30/2023
Merger
Issuer
N
11356776
05/30/2023
Merger Consideration
Y
02/10/2025
/s/ Jonathan Law, Managing Director, Corporate & Investments Compliance