-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 MV9G8swd/ETbSKdyiRd51M/e9IY+HoGUtemU5wvZe+4/Yv12HOFB6kpt/9JF/gwB
 gm4i0D8a/2rM9xXqAVCMLw==

<SEC-DOCUMENT>0001167420-08-000055.txt : 20081016
<SEC-HEADER>0001167420-08-000055.hdr.sgml : 20081016
<ACCEPTANCE-DATETIME>20081016150812
ACCESSION NUMBER:		0001167420-08-000055
CONFORMED SUBMISSION TYPE:	3/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080916
FILED AS OF DATE:		20081016
DATE AS OF CHANGE:		20081016

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MORGAN STANLEY  INSURED MUNICIPAL INCOME TRUST
		CENTRAL INDEX KEY:			0000885601
		STANDARD INDUSTRIAL CLASSIFICATION:	UNKNOWN SIC - 0000 [0000]
		IRS NUMBER:				133647663
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1031

	BUSINESS ADDRESS:	
		STREET 1:		C/O MORGAN STANLEY TRUST
		STREET 2:		HARBORSIDE FINANCIAL CENTER, PLAZA TWO
		CITY:			JERSEY CITY
		STATE:			NJ
		ZIP:			07311
		BUSINESS PHONE:		(212) 869-6397

	MAIL ADDRESS:	
		STREET 1:		NULL

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MORGAN STANLEY DEAN WITTER INSURED MUNICIPAL INCOME TRUST
		DATE OF NAME CHANGE:	19981221

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INTERCAPITAL INSURED MUNICIPAL INCOME TRUST
		DATE OF NAME CHANGE:	19930211

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INTERCAPITAL INSURED MUNICIPAL TRUST II
		DATE OF NAME CHANGE:	19930112

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Takian Randy
		CENTRAL INDEX KEY:			0001446215

	FILING VALUES:
		FORM TYPE:		3/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-06590
		FILM NUMBER:		081127207

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		212-296-7043

	MAIL ADDRESS:	
		STREET 1:		MORGAN STANLEY INVESTMENT MANAGEMENT
		STREET 2:		522 FIFTH AVENUE, 20TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
</SEC-HEADER>
<DOCUMENT>
<TYPE>3/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0203</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2008-09-16</periodOfReport>

    <dateOfOriginalSubmission>2008-09-25</dateOfOriginalSubmission>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000885601</issuerCik>
        <issuerName>MORGAN STANLEY  INSURED MUNICIPAL INCOME TRUST</issuerName>
        <issuerTradingSymbol>iim</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001446215</rptOwnerCik>
            <rptOwnerName>Takian Randy</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>MORGAN STANLEY INVESTMENT MANAGEMENT</rptOwnerStreet1>
            <rptOwnerStreet2>522 FIFTH AVENUE, 20TH FLOOR</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>President and PEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <ownerSignature>
        <signatureName>/s/ Melissa Chia</signatureName>
        <signatureDate>2008-10-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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