<SUBMISSION>
<ACCESSION-NUMBER>0001209191-06-065034
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20061212
<FILING-DATE>20061214
<DATE-OF-FILING-DATE-CHANGE>20061214
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>MORGAN STANLEY
<CIK>0000895421
<ASSIGNED-SIC>6211
<IRS-NUMBER>363145972
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1130
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>1585 BROADWAY
<CITY>NEW YORK
<STATE>NY
<ZIP>10036
<PHONE>212-761-4000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>1585 BROADWAY
<CITY>NEW YORK
<STATE>NY
<ZIP>10036
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>MORGAN STANLEY DEAN WITTER & CO
<DATE-CHANGED>19980326
</FORMER-COMPANY>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>DEAN WITTER DISCOVER & CO
<DATE-CHANGED>19960315
</FORMER-COMPANY>
</ISSUER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>LYNCH GARY G
<CIK>0001340571
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-11758
<FILM-NUMBER>061278481
</FILING-VALUES>
<BUSINESS-ADDRESS>
<PHONE>212-761-4000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>1585 BROADWAY
<CITY>NEW YORK
<STATE>NY
<ZIP>10036
</MAIL-ADDRESS>
<FORMER-NAME>
<FORMER-CONFORMED-NAME>Lynch Gary G
<DATE-CHANGED>20051004
</FORMER-NAME>
</REPORTING-OWNER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-12-12</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000895421</issuerCik>
        <issuerName>MORGAN STANLEY</issuerName>
        <issuerTradingSymbol>MS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001340571</rptOwnerCik>
            <rptOwnerName>LYNCH GARY G</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>MORGAN STANLEY</rptOwnerStreet1>
            <rptOwnerStreet2>1585 BROADWAY</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10036</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Legal Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2006-12-12</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>91100</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>416728</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>49.639</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By 401(k) Plan/ESOP Trust</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>78.40</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2006-12-12</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>35299</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <value>2016-12-12</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>35299</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>35299</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Stock Units that are convertible into shares of Common Stock at a ratio of 1 to 1.</footnote>
        <footnote id="F2">The value of each Stock Option, based on a Black-Scholes option valuation method, is $22.46. Options become exercisable upon vesting. 50% of the award will vest on January 2, 2009 and 50% will vest on January 2, 2010.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Charlene R. Herzer, Attorney-in-Fact</signatureName>
        <signatureDate>2006-12-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
