<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:ns2="http://www.sec.gov/edgar/common">
    <headerData>
        <submissionType>144</submissionType>
        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0001706957</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001357615</issuerCik>
            <issuerName>KBR INC.</issuerName>
            <secFileNumber>001-33146</secFileNumber>
            <issuerAddress>
                <ns2:street1>601 Jefferson Street</ns2:street1>
                <ns2:street2>Suite 3400</ns2:street2>
                <ns2:city>Houston</ns2:city>
                <ns2:stateOrCountry>TX</ns2:stateOrCountry>
                <ns2:zipCode>77002</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>(713) 753-2000</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>WILLIAM BYRON BRIGHT JR.</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Officer</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <brokerOrMarketmakerDetails>
                <name>Morgan Stanley Smith Barney LLC Executive Financial Services</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>38th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>20000</noOfUnitsSold>
            <aggregateMarketValue>1213522.00</aggregateMarketValue>
            <noOfUnitsOutstanding>134916277</noOfUnitsOutstanding>
            <approxSaleDate>08/11/2023</approxSaleDate>
            <securitiesExchangeName>NYSE</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>04/01/2014</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>57</amountOfSecuritiesAcquired>
            <paymentDate>04/01/2014</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>04/04/2014</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>62</amountOfSecuritiesAcquired>
            <paymentDate>04/04/2014</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/05/2015</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>302</amountOfSecuritiesAcquired>
            <paymentDate>03/05/2015</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/06/2015</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>66</amountOfSecuritiesAcquired>
            <paymentDate>03/06/2015</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>04/01/2015</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>57</amountOfSecuritiesAcquired>
            <paymentDate>04/01/2015</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>04/04/2015</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>62</amountOfSecuritiesAcquired>
            <paymentDate>04/04/2015</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>08/30/2015</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>95</amountOfSecuritiesAcquired>
            <paymentDate>08/30/2015</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/05/2016</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>326</amountOfSecuritiesAcquired>
            <paymentDate>03/05/2016</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/06/2016</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>71</amountOfSecuritiesAcquired>
            <paymentDate>03/06/2016</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/12/2016</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>703</amountOfSecuritiesAcquired>
            <paymentDate>03/12/2016</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>04/01/2016</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>58</amountOfSecuritiesAcquired>
            <paymentDate>04/01/2016</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>04/04/2016</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>61</amountOfSecuritiesAcquired>
            <paymentDate>04/04/2016</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>04/01/2013</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>56</amountOfSecuritiesAcquired>
            <paymentDate>04/01/2013</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>08/30/2011</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>94</amountOfSecuritiesAcquired>
            <paymentDate>08/30/2011</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>04/01/2012</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>57</amountOfSecuritiesAcquired>
            <paymentDate>04/01/2012</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>08/30/2012</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>94</amountOfSecuritiesAcquired>
            <paymentDate>08/30/2012</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>04/04/2013</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>61</amountOfSecuritiesAcquired>
            <paymentDate>04/04/2013</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>08/30/2013</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>93</amountOfSecuritiesAcquired>
            <paymentDate>08/30/2013</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/06/2014</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>72</amountOfSecuritiesAcquired>
            <paymentDate>03/06/2014</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/01/2017</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>205</amountOfSecuritiesAcquired>
            <paymentDate>03/01/2017</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/01/2017</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>812</amountOfSecuritiesAcquired>
            <paymentDate>03/01/2017</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/05/2017</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>326</amountOfSecuritiesAcquired>
            <paymentDate>03/05/2017</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/06/2017</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>71</amountOfSecuritiesAcquired>
            <paymentDate>03/06/2017</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/12/2017</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>703</amountOfSecuritiesAcquired>
            <paymentDate>03/12/2017</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>04/04/2017</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>63</amountOfSecuritiesAcquired>
            <paymentDate>04/04/2017</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/01/2018</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>846</amountOfSecuritiesAcquired>
            <paymentDate>03/01/2018</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/01/2018</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>211</amountOfSecuritiesAcquired>
            <paymentDate>03/01/2018</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/06/2018</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>76</amountOfSecuritiesAcquired>
            <paymentDate>03/06/2018</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/12/2018</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>733</amountOfSecuritiesAcquired>
            <paymentDate>03/12/2018</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>05/17/2018</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>580</amountOfSecuritiesAcquired>
            <paymentDate>05/17/2018</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>05/17/2018</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>2320</amountOfSecuritiesAcquired>
            <paymentDate>05/17/2018</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>02/27/2019</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>807</amountOfSecuritiesAcquired>
            <paymentDate>02/27/2019</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>02/27/2019</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>3228</amountOfSecuritiesAcquired>
            <paymentDate>02/27/2019</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/01/2019</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>846</amountOfSecuritiesAcquired>
            <paymentDate>03/01/2019</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/01/2019</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>211</amountOfSecuritiesAcquired>
            <paymentDate>03/01/2019</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>05/17/2019</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>580</amountOfSecuritiesAcquired>
            <paymentDate>05/17/2019</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>05/17/2019</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>2320</amountOfSecuritiesAcquired>
            <paymentDate>05/17/2019</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>02/27/2020</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>647</amountOfSecuritiesAcquired>
            <paymentDate>02/27/2020</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>08/30/2014</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>93</amountOfSecuritiesAcquired>
            <paymentDate>08/30/2014</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>02/27/2020</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units Vested under Issuer S-8 Registered Plan</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>1875</amountOfSecuritiesAcquired>
            <paymentDate>02/27/2020</paymentDate>
            <natureOfPayment>Services Rendered</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>08/11/2023</noticeDate>
            <planAdoptionDates/>
            <signature>/s/ William Byron Bright</signature>
        </noticeSignature>
    </formData>
</edgarSubmission>
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144
0001706957
XXXXXXXX
LIVE
0001357615
KBR INC.
001-33146
601 Jefferson Street
Suite 3400
Houston
TX
77002
(713) 753-2000
WILLIAM BYRON BRIGHT JR.
Officer
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
38th Floor
New York
NY
10004
20000
1213522.00
134916277
08/11/2023
NYSE
Common
04/01/2014
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
57
04/01/2014
Services Rendered
Common
04/04/2014
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
62
04/04/2014
Services Rendered
Common
03/05/2015
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
302
03/05/2015
Services Rendered
Common
03/06/2015
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
66
03/06/2015
Services Rendered
Common
04/01/2015
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
57
04/01/2015
Services Rendered
Common
04/04/2015
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
62
04/04/2015
Services Rendered
Common
08/30/2015
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
95
08/30/2015
Services Rendered
Common
03/05/2016
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
326
03/05/2016
Services Rendered
Common
03/06/2016
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
71
03/06/2016
Services Rendered
Common
03/12/2016
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
703
03/12/2016
Services Rendered
Common
04/01/2016
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
58
04/01/2016
Services Rendered
Common
04/04/2016
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
61
04/04/2016
Services Rendered
Common
04/01/2013
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
56
04/01/2013
Services Rendered
Common
08/30/2011
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
94
08/30/2011
Services Rendered
Common
04/01/2012
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
57
04/01/2012
Services Rendered
Common
08/30/2012
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
94
08/30/2012
Services Rendered
Common
04/04/2013
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
61
04/04/2013
Services Rendered
Common
08/30/2013
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
93
08/30/2013
Services Rendered
Common
03/06/2014
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
72
03/06/2014
Services Rendered
Common
03/01/2017
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
205
03/01/2017
Services Rendered
Common
03/01/2017
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
812
03/01/2017
Services Rendered
Common
03/05/2017
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
326
03/05/2017
Services Rendered
Common
03/06/2017
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
71
03/06/2017
Services Rendered
Common
03/12/2017
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
703
03/12/2017
Services Rendered
Common
04/04/2017
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
63
04/04/2017
Services Rendered
Common
03/01/2018
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
846
03/01/2018
Services Rendered
Common
03/01/2018
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
211
03/01/2018
Services Rendered
Common
03/06/2018
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
76
03/06/2018
Services Rendered
Common
03/12/2018
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
733
03/12/2018
Services Rendered
Common
05/17/2018
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
580
05/17/2018
Services Rendered
Common
05/17/2018
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
2320
05/17/2018
Services Rendered
Common
02/27/2019
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
807
02/27/2019
Services Rendered
Common
02/27/2019
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
3228
02/27/2019
Services Rendered
Common
03/01/2019
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
846
03/01/2019
Services Rendered
Common
03/01/2019
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
211
03/01/2019
Services Rendered
Common
05/17/2019
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
580
05/17/2019
Services Rendered
Common
05/17/2019
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
2320
05/17/2019
Services Rendered
Common
02/27/2020
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
647
02/27/2020
Services Rendered
Common
08/30/2014
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
93
08/30/2014
Services Rendered
Common
02/27/2020
Restricted Stock Units Vested under Issuer S-8 Registered Plan
Issuer
N
1875
02/27/2020
Services Rendered
Y
08/11/2023
/s/ William Byron Bright