-----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,
 IcfMU8jxN9SXoEouELGAJDzcTm8NaB58V0qcmI/l9lB0RGLbrQ3DeBL+TDJc2xQv
 +jWmk8HJrMjmm0YirSd1/Q==

<SEC-DOCUMENT>0001418824-08-000008.txt : 20080225
<SEC-HEADER>0001418824-08-000008.hdr.sgml : 20080225
<ACCEPTANCE-DATETIME>20080225113543
ACCESSION NUMBER:		0001418824-08-000008
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070901
FILED AS OF DATE:		20080225
DATE AS OF CHANGE:		20080225

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MORGAN STANLEY INCOME SECURITIES INC
		CENTRAL INDEX KEY:			0000093284
		STANDARD INDUSTRIAL CLASSIFICATION:	UNKNOWN SIC - 0000 [0000]
		IRS NUMBER:				132739671
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			0930

	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:		C/O MORGAN STANLEY TRUST
		STREET 2:		HARBORSIDE FINANCIAL CENTER
		CITY:			JERSEY CITY
		STATE:			NJ
		ZIP:			07311

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MORGAN STANLEY DEAN WITTER INCOME SECURITIES INC
		DATE OF NAME CHANGE:	19981221

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INTERCAPITAL INCOME SECURITIES INC
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	STANDARD & POORS INTERCAPITAL INCOME SEC
		DATE OF NAME CHANGE:	19780813

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Kreider Steven K
		CENTRAL INDEX KEY:			0001418824

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-02349
		FILM NUMBER:		08638612

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		212-296-7043

	MAIL ADDRESS:	
		STREET 1:		MORGAN STANLEY INVESTMENT MANAGEMENT
		STREET 2:		522 5TH AVENUE, FLOOR 20
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2007-09-01</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000093284</issuerCik>
        <issuerName>MORGAN STANLEY INCOME SECURITIES INC</issuerName>
        <issuerTradingSymbol>ICB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001418824</rptOwnerCik>
            <rptOwnerName>Kreider Steven K</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>MORGAN STANLEY INVESTMENT MANAGEMENT</rptOwnerStreet1>
            <rptOwnerStreet2>522 5TH AVENUE, FLOOR 20</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10036</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Portfolio Manager</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <ownerSignature>
        <signatureName>/s/Melissa Chia</signatureName>
        <signatureDate>2008-02-25</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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