<SEC-DOCUMENT>0000919574-13-001482.txt : 20130214
<SEC-HEADER>0000919574-13-001482.hdr.sgml : 20130214
<ACCEPTANCE-DATETIME>20130214113417
ACCESSION NUMBER:		0000919574-13-001482
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20120109
FILED AS OF DATE:		20130214
DATE AS OF CHANGE:		20130214

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BLACKROCK MUNICIPAL INCOME TRUST
		CENTRAL INDEX KEY:			0001137393
		IRS NUMBER:				510409115
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1031

	BUSINESS ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		STREET 2:		MUTUAL FUND DEPARTMENT
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809
		BUSINESS PHONE:		888-825-2257

	MAIL ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		STREET 2:		MUTUAL FUND DEPARTMENT
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Brigade Leveraged Capital Structures Fund Ltd.
		CENTRAL INDEX KEY:			0001421307
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-10339
		FILM NUMBER:		13608246

	BUSINESS ADDRESS:	
		STREET 1:		C/O OGIER FIDUCIARY SERVICES (CAY) LTD.
		STREET 2:		89 NEXUS WAY, CAMANA BAY
		CITY:			GRAND CAYMAN
		STATE:			E9
		ZIP:			KY1-9007
		BUSINESS PHONE:		(345) 949-9876

	MAIL ADDRESS:	
		STREET 1:		C/O OGIER FIDUCIARY SERVICES (CAY) LTD.
		STREET 2:		89 NEXUS WAY, CAMANA BAY
		CITY:			GRAND CAYMAN
		STATE:			E9
		ZIP:			KY1-9007

	FORMER NAME:	
		FORMER CONFORMED NAME:	Brigade Leveraged Capital Structures Offshore Ltd.
		DATE OF NAME CHANGE:	20091215

	FORMER NAME:	
		FORMER CONFORMED NAME:	BRIGADE LEVERAGED CAPITAL STRUCTURES FUND LTD.
		DATE OF NAME CHANGE:	20071214
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>p1358690.xml
<DESCRIPTION>OWNERSHIP DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2012-01-09</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001137393</issuerCik>
        <issuerName>BLACKROCK MUNICIPAL INCOME TRUST</issuerName>
        <issuerTradingSymbol>BFK</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001421307</rptOwnerCik>
            <rptOwnerName>Brigade Leveraged Capital Structures Fund Ltd.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O OGIER FIDUCIARY SVCS (CAYMAN) LTD</rptOwnerStreet1>
            <rptOwnerStreet2>89 NEXUS WAY, CAMANA BAY</rptOwnerStreet2>
            <rptOwnerCity>GRAND CAYMAN</rptOwnerCity>
            <rptOwnerState>E9</rptOwnerState>
            <rptOwnerZipCode>KY1-9007</rptOwnerZipCode>
            <rptOwnerStateDescription>CAYMAN ISLANDS</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Auction Rate Preferred Shares</value>
            </securityTitle>
            <transactionDate>
                <value>2012-01-09</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>449</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1024</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The shares were mandatorily redeemed by the Issuer on January 9, 2012.</footnote>
        <footnote id="F2">The shares were mandatorily redeemed at par (i.e., $25,000 per share).</footnote>
        <footnote id="F3">Consistent with the Securities and Exchange Commission's Auction Rate Securities Global Exemptive Relief no action letter issued on September 22, 2008, the shares reported herein represent the reporting person's combined holdings in the separate series of preferred shares of the issuer.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Brigade Leveraged Capital Structures Fund Ltd., By: /s/ Donald E. Morgan, III, Director</signatureName>
        <signatureDate>2013-02-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
