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

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-12-03</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000800286</issuerCik>
        <issuerName>SED INTERNATIONAL HOLDINGS INC</issuerName>
        <issuerTradingSymbol>SECX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001406360</rptOwnerCik>
            <rptOwnerName>North &amp; Webster LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1430 MASSACHUSETTS AVE.</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CAMBRIDGE</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02138</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See Footnotes</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001370894</rptOwnerCik>
            <rptOwnerName>NORTH &amp; WEBSTER VALUE OPPORTUNITIES FUND L P</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1430 MASSASCHUSETTS AVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CAMBRIDGE</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02138</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See Footnotes</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001406365</rptOwnerCik>
            <rptOwnerName>Kidston Samuel A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1430 MASSACHUSETTS AVE.</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CAMBRIDGE</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02139</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See Footnotes</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001439674</rptOwnerCik>
            <rptOwnerName>North &amp; Webster Fund II, LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1430 MASSACHUSETTS AVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CAMBRIDGE</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02138</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See Footnotes</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $.01</value>
            </securityTitle>
            <transactionDate>
                <value>2008-12-03</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>592</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>1.49</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>100665</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By North &amp; Webster Fund II, LP</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $.01</value>
            </securityTitle>
            <transactionDate>
                <value>2008-12-05</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>26500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>1.55</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>127165</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By North &amp; Webster Fund II, LP</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, par value $.01</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>166685</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By North &amp; Webster Val. Opp. Fund</value>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, par value $.01</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>34419</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Managed Accounts</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, par value $.01</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6268</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F5"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The Reporting Persons are members of a Section 13(d) group that owns more than 10% of the Issuer's outstanding common stock. The Reporting Persons, as members of a Section 13(d) group with respect to the securities of the Issuer with Hummingbird Management, LLC, Todd Rosner, Allyn R. Earl and J.K. Hage III may also be deemed to beneficially own an additional 284,200 Shares, 219,046 Shares, 458,402 Shares and 111,200 Shares of the Issuer beneficially owned by Hummingbird Management, LLC, Todd Rosner, Allyn R. Earl and J.K. Hage III respectively. The Reporting Persons disclaim beneficial ownership of such Shares.</footnote>
        <footnote id="F2">Consists of Shares owned by North &amp; Webster Fund II, LP (NW Fund II). North &amp; Webster, LLC, as the General Partner of NW Fund II, may be deemed to beneficially own the Shares owned by NW Fund II. Mr. Kidston, as Managing Member of North &amp; Webster, LLC, may be deemed to beneficially own the Shares owned by NW Fund II. Each of North &amp; Webster, LLC, and Mr. Kidston disclaims beneficial ownership of such Shares except to the extent of its or his pecuniary interest therein.</footnote>
        <footnote id="F3">Consists of Shares held by certain managed accounts over which North &amp; Webster, LLC, has voting and dispositive power. Mr. Kidston, as the Managing Member of North &amp; Webster, LLC, may be deemed to beneficially own the Shares held by the managed accounts. Each of North &amp; Webster, LLC, and Mr. Kidston disclaims beneficial ownership of such Shares except to the extent of its or his pecuniary interest therein.</footnote>
        <footnote id="F4">Consists of Shares owned by North &amp; Webster Value Opportunities Fund, LP (NW Value Opportunities Fund). North &amp; Webster, LLC, as the General Partner of NW Value Opportunities Fund, may be deemed to beneficially own the Shares owned by NW Value Opportunities Fund. Mr. Kidston, as Managing Member of North &amp; Webster, LLC, may be deemed to beneficially own the Shares owned by NW Value Opportunities Fund. Each of North &amp; Webster, LLC, and Mr. Kidston disclaims beneficial ownership of such Shares except to the extent of its or his pecuniary interest therein.</footnote>
        <footnote id="F5">Samuel A. Kidston, as Managing Member of North &amp; Webster, LLC, may be deemed to beneficially own the Shares owned by North &amp; Webster, LLC. Mr. Kidston disclaims beneficial ownership of such Shares except to the extent of his pecuniary interest therein.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: North &amp; Webster LLC, By:/s/Samuel A Kidston, Managing Member</signatureName>
        <signatureDate>2008-12-05</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: North &amp; Webster Value Opportunities Fund, LP, BY:North &amp; Webster, LLC, its General Partner, By:/s/ Samuel A Kidston, Managing Member</signatureName>
        <signatureDate>2008-12-05</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Kidston, Samuel A.</signatureName>
        <signatureDate>2008-12-05</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By:North &amp; Webster Fund II, By:North &amp; Webster, LLC, its General Partner, By:/s/ Samuel A Kidston, Managing Member</signatureName>
        <signatureDate>2008-12-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
