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

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-02-13</periodOfReport>

    <notSubjectToSection16>true</notSubjectToSection16>

    <issuer>
        <issuerCik>0001327098</issuerCik>
        <issuerName>Golf Galaxy, Inc.</issuerName>
        <issuerTradingSymbol>GGXY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001333524</rptOwnerCik>
            <rptOwnerName>Gellman David S</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O FDG ASSOCIATES</rptOwnerStreet1>
            <rptOwnerStreet2>299 PARK AVENUE - 16TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10171</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isOfficer>false</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Golf Galaxy Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2007-02-13</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>892679</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>18.82</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Shares held by FdG Capital Partners LLC (&quot;FdG Capital&quot;)</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Golf Galaxy Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2007-02-13</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>70479</value>
                    <footnoteId id="F3"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>18.82</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Shares held by FdG-Chase Capital Partners LLC (&quot;FdG Chase&quot;)</value>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>18.77</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2007-02-13</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F5"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2006-02-08</value>
                <footnoteId id="F6"/>
            </exerciseDate>
            <expirationDate>
                <value>2016-02-08</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Golf Galaxy Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1500</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Disposed of pursuant to the Agreement and Plan of Merger, dated as of November 13, 2006, among the Issuer, Yankees Acquisition Corp. and Dick's Sporting Goods, Inc. (&quot;Merger Agreement&quot;) in exchange for the right to receive $18.82 per share in cash, without interest.</footnote>
        <footnote id="F2">The shares are held by FdG Capital. The Managing Member of FdG Capital is FdG Capital Associates LLC (&quot;FdG Associates&quot;). FdG Associates is managed by a board of managers, comprised of four members including Mr. Gellman, which has full voting power over the shares. The FdG Associates investment committee, comprised of three members including Mr. Gellman, has full investment discretion over the shares. No single member of the board of managers or investment committee has voting or dispositive authority over the shares. Consequently, Mr. Gellman disclaims beneficial ownership of the shares held by FdG Capital except to the extent of his pecuniary interest therein.</footnote>
        <footnote id="F3">Disposed of pursuant to the Merger Agreement in exchange for the right to receive $18.82 per share in cash, without interest.</footnote>
        <footnote id="F4">The shares are held by FdG Chase. The Managing Member of FdG Chase is FdG Associates. FdG Associates is managed by a board of managers, comprised of four members including Mr. Gellman, which has full voting power over the shares. The FdG Associates investment committee, comprised of three members, including Mr. Gellman, has full investment discretion over the shares. No single member of the board of managers or investment committee has voting or dispositive authority over the shares. Consequently, Mr. Gellman disclaims beneficial ownership of the shares held by FdG Chase except to the extent of his pecuniary interest therein.</footnote>
        <footnote id="F5">Effective at the time of the closing of the transactions contemplated by the Merger Agreement, each option to acquire shares of the Issuer's common stock was converted into the right to acquire Dick's Sporting Goods, Inc. common stock. Options converted into options to purchase shares of Dick's Sporting Goods, Inc. common stock will retain the same terms and conditions, except that the number of shares of Dick's Sporting Goods, Inc. common stock and the exercise price of such options will be adjusted utilizing a conversion ratio of 0.386.</footnote>
        <footnote id="F6">The date indicated is the grant date and the options were 100% vested upon date of grant.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Richard C. Nordvold Attorney-in-fact for David S. Gellman</signatureName>
        <signatureDate>2007-02-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
