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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-07-26</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001616533</issuerCik>
        <issuerName>SMART Global Holdings, Inc.</issuerName>
        <issuerTradingSymbol>SGH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001487793</rptOwnerCik>
            <rptOwnerName>Silver Lake (Offshore) AIV GP III, Ltd.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SILVER LAKE</rptOwnerStreet1>
            <rptOwnerStreet2>2775 SAND HILL ROAD, SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>MENLO PARK</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001623274</rptOwnerCik>
            <rptOwnerName>Silver Lake Technology Associates III Cayman, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SILVER LAKE</rptOwnerStreet1>
            <rptOwnerStreet2>2775 SAND HILL ROAD, SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>MENLO PARK</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001487788</rptOwnerCik>
            <rptOwnerName>Silver Lake Partners III Cayman (AIV III), L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SILVER LAKE</rptOwnerStreet1>
            <rptOwnerStreet2>2775 SAND HILL ROAD, SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>MENLO PARK</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001487789</rptOwnerCik>
            <rptOwnerName>Silver Lake Technology Investors III Cayman, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SILVER LAKE</rptOwnerStreet1>
            <rptOwnerStreet2>2775 SAND HILL ROAD, SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>MENLO PARK</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001696894</rptOwnerCik>
            <rptOwnerName>SILVER LAKE SUMERU (OFFSHORE) AIV GP, LTD.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SILVER LAKE</rptOwnerStreet1>
            <rptOwnerStreet2>2775 SAND HILL ROAD, SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>MENLO PARK</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001706811</rptOwnerCik>
            <rptOwnerName>SLTA Sumeru (GP) Cayman, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SILVER LAKE</rptOwnerStreet1>
            <rptOwnerStreet2>2775 SAND HILL ROAD, SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>MENLO PARK</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001706523</rptOwnerCik>
            <rptOwnerName>Silver Lake Technology Associates Sumeru Cayman, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SILVER LAKE</rptOwnerStreet1>
            <rptOwnerStreet2>2775 SAND HILL ROAD, SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>MENLO PARK</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001706809</rptOwnerCik>
            <rptOwnerName>Silver Lake Sumeru Fund Cayman, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SILVER LAKE</rptOwnerStreet1>
            <rptOwnerStreet2>2775 SAND HILL ROAD, SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>MENLO PARK</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001706812</rptOwnerCik>
            <rptOwnerName>Silver Lake Technology Investors Sumeru Cayman, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SILVER LAKE</rptOwnerStreet1>
            <rptOwnerStreet2>2775 SAND HILL ROAD, SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>MENLO PARK</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Ordinary Shares</value>
            </securityTitle>
            <transactionDate>
                <value>2021-07-26</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1526909</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Held through Silver Lake Partners III Cayman (AIV III), L.P.</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F6"/>
                    <footnoteId id="F8"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Ordinary Shares</value>
            </securityTitle>
            <transactionDate>
                <value>2021-07-26</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>758335</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Held through Silver Lake Sumeru Fund Cayman, L.P.</value>
                    <footnoteId id="F3"/>
                    <footnoteId id="F7"/>
                    <footnoteId id="F8"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Ordinary Shares</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8229</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Held through Silver Lake Technology Investors III Cayman, L.P.</value>
                    <footnoteId id="F4"/>
                    <footnoteId id="F6"/>
                    <footnoteId id="F8"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Ordinary Shares</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>9233</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Technology Investors Sumeru Cayman, L.P.</value>
                    <footnoteId id="F5"/>
                    <footnoteId id="F7"/>
                    <footnoteId id="F8"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents an in-kind distribution of Ordinary Shares of the Issuer by Silver Lake Partners III Cayman (AIV III), L.P. (&quot;SLP III Cayman&quot;) and Silver Lake Sumeru Fund Cayman, L.P. (&quot;SLS Cayman&quot;) and certain of their respective affiliates to certain direct and indirect equityholders.</footnote>
        <footnote id="F2">These securities were directly held by SLP III Cayman.</footnote>
        <footnote id="F3">These securities were directly held by SLS Cayman.</footnote>
        <footnote id="F4">These securities are directly held by Silver Lake Technology Investors III Cayman, L.P. (&quot;SLTI III Cayman&quot;).</footnote>
        <footnote id="F5">These securities are directly held by Silver Lake Technology Investors Sumeru Cayman, L.P. (&quot;SLTI Sumeru Cayman&quot;).</footnote>
        <footnote id="F6">Silver Lake Technology Associates III Cayman, L.P. (&quot;SLTA III Cayman&quot;) is the general partner of SLP III Cayman and SLTI III Cayman. Silver Lake (Offshore) AIV GP III, Ltd. is the general partner of SLTA III Cayman.</footnote>
        <footnote id="F7">Silver Lake Technology Associates Sumeru Cayman, L.P. (&quot;SLTA Sumeru Cayman&quot;) is the general partner of SLS Cayman and SLTI Sumeru Cayman. SLTA Sumeru (GP) Cayman, L.P. (&quot;SLTA Sumeru GP Cayman&quot;) is the general partner of SLTA Sumeru Cayman, and the general partner of SLTA Sumeru GP Cayman is Silver Lake Sumeru (Offshore) AIV GP, Ltd. (&quot;SL Sumeru Offshore Ltd.&quot;)</footnote>
        <footnote id="F8">This filing shall not be deemed an admission that for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the &quot;Exchange Act&quot;) or otherwise, that the Reporting Persons are the beneficial owners of any equity securities in excess of their respective pecuniary interests, and each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein, if any.</footnote>
    </footnotes>

    <remarks>The Reporting Persons are jointly filing this Form 4 pursuant to Rule 16a-3(j) under the Exchange Act.</remarks>

    <ownerSignature>
        <signatureName>By: /s/ Andrew J. Schader, Director of Silver Lake (Offshore) AIV GP III, Ltd.</signatureName>
        <signatureDate>2021-07-26</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: /s/ Andrew J. Schader,, Director of Silver Lake (Offshore) AIV GP III, Ltd., general partner of Silver Lake Technology Associates III Cayman, L.P.</signatureName>
        <signatureDate>2021-07-26</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: /s/ Andrew J. Schader, Director of Silver Lake (Offshore) AIV GP III, Ltd., general partner of Silver Lake Technology Associates III Cayman, L.P., general partner of Silver Lake Partners III Cayman (AIV III), L.P.</signatureName>
        <signatureDate>2021-07-26</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: /s/ Andrew J. Schader, Director of Silver Lake (Offshore) AIV GP III, Ltd., general partner of Silver Lake Technology Associates III Cayman, L.P., general partner of Silver Lake Technology Investors III Cayman, L.P.</signatureName>
        <signatureDate>2021-07-26</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: /s/ Andrew J. Schader, Director of Silver Lake Sumeru (Offshore) AIV GP, Ltd.</signatureName>
        <signatureDate>2021-07-26</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: /s/ Andrew J. Schader, Director of Silver Lake Sumeru (Offshore) AIV GP, Ltd., general partner of SLTA Sumeru (GP) Cayman, L.P.</signatureName>
        <signatureDate>2021-07-26</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: /s/ Andrew J. Schader, Director of Silver Lake Sumeru (Offshore) AIV GP, Ltd., general partner of SLTA Sumeru (GP) Cayman, L.P., general partner of Silver Lake Technology Associates Sumeru Cayman, L.P.</signatureName>
        <signatureDate>2021-07-26</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: /s/ Andrew J. Schader, Director of Silver Lake Sumeru (Offshore) AIV GP, Ltd., GP of SLTA Sumeru (GP) Cayman, L.P., GP of Silver Lake Technology Associates Sumeru Cayman, L.P., GP of Silver Lake Sumeru Fund Cayman, L.P.</signatureName>
        <signatureDate>2021-07-26</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: /s/ Andrew J. Schader, Director of Silver Lake Sumeru (Offshore) AIV GP, Ltd., GP of SLTA Sumeru (GP) Cayman, L.P., GP of Silver Lake Technology Associates Sumeru Cayman, L.P., GP of Silver Lake Technology Investors Sumeru Cayman, L.P.</signatureName>
        <signatureDate>2021-07-26</signatureDate>
    </ownerSignature>
</ownershipDocument>
