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

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-12-01</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000819539</issuerCik>
        <issuerName>NEIMAN MARCUS GROUP INC</issuerName>
        <issuerTradingSymbol>NMG.B</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001298100</rptOwnerCik>
            <rptOwnerName>Berylson John G</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O MARK D. BALK, GOULSTON &amp; STORRS, PC</rptOwnerStreet1>
            <rptOwnerStreet2>400 ATLANTIC AVENUE</rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02110</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Member of Schedule 13D group</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class B Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2004-12-01</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>G</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1050</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>62.83</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>417071</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>see footnotes</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Class B Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>96</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents (1) a gift of 350 shares to J-J-E 1988 Trust udt dated November 1, 1988 fbo Jennifer L. Berylson, of which the reporting person and Mark D. Balk are trustees; (2) a gift of 350 shares to J-J-E 1988 Trust udt dated November 1, 1988 fbo James T. Berylson, of which the reporting person and Mark D. Balk are trustees; and (3) a gift of 350 shares to J-J-E 1988 Trust udt dated November 1, 1988 fbo Elizabeth S. Berylson, of which the reporting person and Mark D. Balk are trustees.</footnote>
        <footnote id="F2">Reflects the shares owned directly or indirectly by the following persons or entities and indirectly by the reporting person:  189,918 shares owned directly by Amy Smith Berylson, the wife of the reporting person; 28,997 shares owned indirectly by Amy Smith Berylson as trustee of the Susan F. Smith Grantor Retained Annuity Trust - 7 Years u/d/t dated August 10, 1994 f/b/o Amy Smith Berylson; 5,376 shares owned indirectly by the reporting person as trustee of the J-J-E 1988 Trust udt dated November 1, 1988 fbo Jennifer Berylson; 5,376 shares owned indirectly by the reporting person as trustee of the J-J-E 1988 Trust udt dated November 1, 1988 fbo James Berylson; 5,376 shares owned indirectly by the reporting person as trustee of the J-J-E 1988 Trust udt dated November 1, 1988 fbo Elizabeth Berylson;</footnote>
        <footnote id="F3">18,078 shares owned indirectly by the reporting person as trustee of the Amy Smith Berylson 1998 Grantor Retained Annuity Trust fbo Jennifer L. Berylson; 18,078 shares owned indirectly by the reporting person as trustee of the Amy Smith Berylson 1998 Grantor Retained Annuity Trust fbo Elizabeth S. Berylson; 18,078 shares owned indirectly by the reporting person as trustee of the Amy Smith Berylson 1998 Grantor Retained Annuity Trust fbo James T. Berylson; 59,529 shares owned indirectly by the reporting person and Amy Smith Berylson as trustees of the Amy Smith Berylson Grantor Retained Annuity Trust;</footnote>
        <footnote id="F4">48,208 shares owned indirectly by Amy Smith Berylson as trustee of the Amy Smith Berylson Insurance Trust; 6,685 shares owned directly by Jennifer L. Berylson, the daughter of the reporting person; 6,686 shares owned indirectly by John G. Berylson and Amy Smith Berylson as guardians for James Berylson, the son of the reporting person; and 6,686 shares owned indirectly by John G. Berylson and Amy Smith Berylson as guardians for Elizabeth Berylson, the daughter of the reporting person.  The reporting person disclaims beneficial ownership of all these shares, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Mark D. Balk, Attorney-in-Fact</signatureName>
        <signatureDate>2004-12-02</signatureDate>
    </ownerSignature>
</ownershipDocument>

