<?xml version="1.0"?><?xml-stylesheet type="text/xsl" href="../4_X02.xsl"?><ownershipDocument>    <schemaVersion>X0303</schemaVersion>    <documentType>4</documentType>    <periodOfReport>2010-03-08</periodOfReport>    <notSubjectToSection16>0</notSubjectToSection16>    <issuer>        <issuerCik>0001442505</issuerCik>        <issuerName>Clearwire Corp /DE</issuerName>        <issuerTradingSymbol>CLWR</issuerTradingSymbol>    </issuer>    <reportingOwner>        <reportingOwnerId>            <rptOwnerCik>0001260951</rptOwnerCik>            <rptOwnerName>SAW JOHN</rptOwnerName>        </reportingOwnerId>        <reportingOwnerAddress>            <rptOwnerStreet1>4400 CARILLON POINT</rptOwnerStreet1>            <rptOwnerStreet2></rptOwnerStreet2>            <rptOwnerCity>KIRKLAND</rptOwnerCity>            <rptOwnerState>WA</rptOwnerState>            <rptOwnerZipCode>98033</rptOwnerZipCode>            <rptOwnerStateDescription></rptOwnerStateDescription>        </reportingOwnerAddress>        <reportingOwnerRelationship>            <isDirector>0</isDirector>            <isOfficer>1</isOfficer>            <isTenPercentOwner>0</isTenPercentOwner>            <isOther>0</isOther>            <officerTitle>SVP &amp; Chief Technology Officer</officerTitle>        </reportingOwnerRelationship>    </reportingOwner>    <nonDerivativeTable>        <nonDerivativeTransaction>            <securityTitle>                <value>Class A Common Stock</value>            </securityTitle>            <transactionDate>                <value>2010-03-08</value>            </transactionDate>            <deemedExecutionDate>                <value>2010-03-08</value>            </deemedExecutionDate>            <transactionCoding>                <transactionFormType>4</transactionFormType>                <transactionCode>S</transactionCode>                <equitySwapInvolved>0</equitySwapInvolved>                <footnoteId id="F1"/>            </transactionCoding>            <transactionTimeliness>                <value></value>            </transactionTimeliness>            <transactionAmounts>                <transactionShares>                    <value>3821</value>                </transactionShares>                <transactionPricePerShare>                    <value>7.34</value>                </transactionPricePerShare>                <transactionAcquiredDisposedCode>                    <value>D</value>                </transactionAcquiredDisposedCode>            </transactionAmounts>            <postTransactionAmounts>                <sharesOwnedFollowingTransaction>                    <value>307211</value>                </sharesOwnedFollowingTransaction>            </postTransactionAmounts>            <ownershipNature>                <directOrIndirectOwnership>                    <value>D</value>                </directOrIndirectOwnership>            </ownershipNature>        </nonDerivativeTransaction>    </nonDerivativeTable>    <footnotes>        <footnote id="F1">Represents the automatic sale of stock to satisfy the reporting person's tax withholding obligations.</footnote>    </footnotes>    <remarks></remarks>    <ownerSignature>        <signatureName>By: Frederick L. Williams, Jr.For: John Saw</signatureName>        <signatureDate>2010-03-09</signatureDate>    </ownerSignature></ownershipDocument>