-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 utC9DoAG4zQHDCy6h5LT/g==

<SEC-DOCUMENT>0001129787-04-000156.txt : 20041220
<SEC-HEADER>0001129787-04-000156.hdr.sgml : 20041220
<ACCEPTANCE-DATETIME>20041220171750
ACCESSION NUMBER:		0001129787-04-000156
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20041216
FILED AS OF DATE:		20041220
DATE AS OF CHANGE:		20041220

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MARTHA STEWART LIVING OMNIMEDIA INC
		CENTRAL INDEX KEY:			0001091801
		STANDARD INDUSTRIAL CLASSIFICATION:	PERIODICALS:  PUBLISHING OR PUBLISHING AND PRINTING [2721]
		IRS NUMBER:				522187059
		STATE OF INCORPORATION:			DE

	BUSINESS ADDRESS:	
		STREET 1:		20 WEST 43RD STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
		BUSINESS PHONE:		2128278000

	MAIL ADDRESS:	
		STREET 1:		20 WEST 43RD STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KAMIN PETER H
		CENTRAL INDEX KEY:			0000937541
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15395
		FILM NUMBER:		041214891

	BUSINESS ADDRESS:	
		STREET 1:		40 BRIARCLIFF RD
		CITY:			LONGMEADOW
		STATE:			MA
		ZIP:			01106
		BUSINESS PHONE:		6179605570

	MAIL ADDRESS:	
		STREET 1:		TWO INTERNATIONAL PLACE, 25TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			UBBEN JEFFREY W
		CENTRAL INDEX KEY:			0001159187
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15395
		FILM NUMBER:		041214892

	BUSINESS ADDRESS:	
		STREET 1:		ONE MARITIME PLAZA, SUITE 1400
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94111
		BUSINESS PHONE:		4153623700

	MAIL ADDRESS:	
		STREET 1:		435 PACIFIC AVENUE, FOURTH FLOOR
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94133

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			VA PARTNERS LLC
		CENTRAL INDEX KEY:			0001129787
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15395
		FILM NUMBER:		041214893

	BUSINESS ADDRESS:	
		STREET 1:		435 PACIFIC AVENUE
		STREET 2:		FOURTH FLOOR
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94133
		BUSINESS PHONE:		4153623700

	MAIL ADDRESS:	
		STREET 1:		435 PACIFIC AVENUE
		STREET 2:		FOURTH FLOOR
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94133
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-12-16</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001091801</issuerCik>
        <issuerName>MARTHA STEWART LIVING OMNIMEDIA INC</issuerName>
        <issuerTradingSymbol>MSO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001129787</rptOwnerCik>
            <rptOwnerName>VA PARTNERS LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>435 PACIFIC AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>FOURTH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94133</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001159187</rptOwnerCik>
            <rptOwnerName>UBBEN JEFFREY W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>435 PACIFIC AVENUE, FOURTH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94133</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000937541</rptOwnerCik>
            <rptOwnerName>KAMIN PETER H</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>TWO INTERNATIONAL PLACE, 25TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02110</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock par value $.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2004-12-16</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>165000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>30.87</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1566983.35</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock par value $.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2004-12-17</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>42900</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>28.57</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1524083.35</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">As General Partner of ValueAct Capital Master Fund, L.P. and ValueAct Capital Partners Co-Investors, L.P.</footnote>
        <footnote id="F2">The reported stock is owned directly by ValueAct Capital Master Fund, L.P., and ValueAct Capital Partners Co-Investors, L.P. and indirectly by VA Partners, LLC as general partner of ValueAct Capital Master Fund, L.P. and ValueAct Capital Partners Co-Investors, L.P.  Jeffrey W. Ubben is a director of Martha Stewart Living Omnimedia, Inc. and Managing Member of VA Partners, LLC, the General Partner.  Peter H. Kamin and George F. Hamel are Managing Members of VA Partners, LLC, the General Partner.  The reporting persons disclaim beneficial ownership of the reported stock except to the extent of their pecuniary interest therein.</footnote>
    </footnotes>

    <remarks>Joint Filer Information

Name: ValueAct Capital Master Fund, L.P.
Address: 435 Pacific Avenue, 4th Floor, San Francisco, CA 94133
Designated Filer: VA Partners, LLC
Issuer and Ticker Symbol: Martha Stewart Living Omnimedia, Inc. (MSO)
Date of Event Requiring Statement: December 16, 2004


Name: ValueAct Capital Partners Co-Investors, L.P.
Address: 435 Pacific Avenue, 4th Floor, San Francisco, CA 94133
Designated Filer: VA Partners, LLC
Issuer and Ticker Symbol: Martha Stewart Living Omnimedia, Inc. (MSO)
Date of Event Requiring Statement: December 16, 2004

Name: Jeffrey W. Ubben
Address: 435 Pacific Avenue, 4th Floor, San Francisco, CA 94133
Designated Filer: VA Partners, LLC
Issuer and Ticker Symbol: Martha Stewart Living Omnimedia, Inc. (MSO)
Date of Event Requiring Statement: December 16, 2004

Name: George F. Hamel, Jr.
Address: 435 Pacific Avenue, 4th Floor, San Francisco, CA 94133
Designated Filer: VA Partners, LLC
Issuer and Ticker Symbol: Martha Stewart Living Omnimedia, Inc. (MSO)
Date of Event Requiring Statement: December 16, 2004

Name: Peter H. Kamin
Address: 435 Pacific Avenue, 4th Floor, San Francisco, CA 94133
Designated Filer: VA Partners, LLC
Issuer and Ticker Symbol: Martha Stewart Living Omnimedia, Inc. (MSO)
Date of Event Requiring Statement: December 16, 2004</remarks>

    <ownerSignature>
        <signatureName>VALUEACT CAPITAL MASTER FUND, L.P., BY VA PARTNERS, L.L.C., ITS GENERAL PARTNER, By: /s/ George F. Hamel, Jr., Managing Member</signatureName>
        <signatureDate>2004-12-20</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>VALUEACT CAPITAL PARTNERS CO-INVESTORS, L.P., BY VA PARTNERS, L.L.C., ITS GENERAL PARTNER By: /s/ George F. Hamel, Jr., Managing Member</signatureName>
        <signatureDate>2004-12-20</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>VA PARTNERS, L.L.C. By: /s/ George F. Hamel, Jr., Managing Member</signatureName>
        <signatureDate>2004-12-20</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: /s/ Jeffrey W. Ubben</signatureName>
        <signatureDate>2004-12-20</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: /s/ George F. Hamel, Jr.</signatureName>
        <signatureDate>2004-12-20</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>By: /s/ Peter H. Kamin</signatureName>
        <signatureDate>2004-12-20</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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