<SEC-DOCUMENT>0001209191-12-054465.txt : 20121126
<SEC-HEADER>0001209191-12-054465.hdr.sgml : 20121126
<ACCEPTANCE-DATETIME>20121126125752
ACCESSION NUMBER:		0001209191-12-054465
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20121123
FILED AS OF DATE:		20121126
DATE AS OF CHANGE:		20121126

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Invesco Municipal Opportunity Trust
		CENTRAL INDEX KEY:			0000884152
		STANDARD INDUSTRIAL CLASSIFICATION:	UNKNOWN SIC - 0000 [0000]
		IRS NUMBER:				363810337
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1031

	BUSINESS ADDRESS:	
		STREET 1:		1555 PEACHTREE STREET, N.E.
		STREET 2:		SUITE 1800
		CITY:			ATLANTA
		STATE:			2Q
		ZIP:			30309
		BUSINESS PHONE:		404-439-3217

	MAIL ADDRESS:	
		STREET 1:		1555 PEACHTREE STREET, N.E.
		STREET 2:		SUITE 1800
		CITY:			ATLANTA
		STATE:			2Q
		ZIP:			30309

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Invesco Van Kampen Municipal Opportunity Trust
		DATE OF NAME CHANGE:	20100601

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
		DATE OF NAME CHANGE:	19981006

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	VAN KAMPEN AMERICAN CAPITAL MUNICIPAL OPPORTUNITY TRUST
		DATE OF NAME CHANGE:	19960102

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Dammeyer Rodney F
		CENTRAL INDEX KEY:			0001077650

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-06567
		FILM NUMBER:		121223839

	MAIL ADDRESS:	
		STREET 1:		4370 LAJOLLA VILLAGE DRIVE
		STREET 2:		SUITE 685
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92122-1249

	FORMER NAME:	
		FORMER CONFORMED NAME:	DAMMEYER RODNEY F
		DATE OF NAME CHANGE:	19990127
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2012-11-23</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000884152</issuerCik>
        <issuerName>Invesco Municipal Opportunity Trust</issuerName>
        <issuerTradingSymbol>VMO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001077650</rptOwnerCik>
            <rptOwnerName>Dammeyer Rodney F</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>CAC, LLC</rptOwnerStreet1>
            <rptOwnerStreet2>4350 LAJOLLA VILLAGE DRIVE #320</rptOwnerStreet2>
            <rptOwnerCity>SAN DIEGO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92122</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Shares</value>
            </securityTitle>
            <transactionDate>
                <value>2012-11-23</value>
                <footnoteId id="F1"/>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>14252</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>15.108</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>129843.957</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Trust</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Shares</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>68062.82</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>DRD Family Partnership LP</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The reporting person effected multiple same-way open market sale transactions on the same day at different prices through a trade order executed by a broker-dealer. The reporting person has reported on a single line all such transactions that occured within a one dollar price range. The reporting person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the issuer or shareholder of the issuer, full information regarding the number of shares sold at each separate price.</footnote>
        <footnote id="F2">Reflects the weighted average sale price. The range of prices for such transactions is $15.10 - $15.14.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Todd L.Spillane, as Attorney in Fact</signatureName>
        <signatureDate>2012-11-26</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
