<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-10-04</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000096289</issuerCik>
        <issuerName>RADIOSHACK CORP</issuerName>
        <issuerTradingSymbol>RSH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001207156</rptOwnerCik>
            <rptOwnerName>MOORE LAURA K</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>100 THROCKMORTON STREET</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 1800</rptOwnerStreet2>
            <rptOwnerCity>FORT WORTH</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>76102</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SENIOR VICE PRESIDENT</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>COMMON STOCK - SUP</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <transactionDate>
                <value>2004-10-04</value>
            </transactionDate>
            <deemedExecutionDate>
                <value>2004-10-04</value>
            </deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>27.00</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>1</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>212.00</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>BY SUP TRUST</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">HELD FOR REPORTING PERSON'S BENEFIT  IN RADIOSHACK EMPLOYEES SUPPLEMENTAL STOCK PROGRAM, AN EXCESS BENEFIT PLAN . SHARES ARE PURCHASED AT THEIR CLOSING PRICES OVER EACH CALENDAR QUARTER THE REPORTING PERSON IS ACQUIRING SHARES UNDER THE PLAN        .</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>JOHN P. CLARSON BY POWER OF ATTORNEY FOR LAURA K. MOORE</signatureName>
        <signatureDate>2004-10-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
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X0202
4
2004-10-04
0
0000096289
RADIOSHACK CORP
RSH
0001207156
MOORE LAURA K
100 THROCKMORTON STREET
SUITE 1800
FORT WORTH
TX
76102
0
1
0
0
SENIOR VICE PRESIDENT
COMMON STOCK - SUP
2004-10-04
2004-10-04
4
J
0
27.00
1
A
212.00
I
BY SUP TRUST
HELD FOR REPORTING PERSON'S BENEFIT  IN RADIOSHACK EMPLOYEES SUPPLEMENTAL STOCK PROGRAM, AN EXCESS BENEFIT PLAN . SHARES ARE PURCHASED AT THEIR CLOSING PRICES OVER EACH CALENDAR QUARTER THE REPORTING PERSON IS ACQUIRING SHARES UNDER THE PLAN        .
JOHN P. CLARSON BY POWER OF ATTORNEY FOR LAURA K. MOORE
2004-10-04