<SEC-DOCUMENT>0001193125-23-021015-index.html : 20230201
<SEC-HEADER>0001193125-23-021015.hdr.sgml : 20230201
<ACCEPTANCE-DATETIME>20230201104557
ACCESSION NUMBER:		0001193125-23-021015
CONFORMED SUBMISSION TYPE:	N-CSR
PUBLIC DOCUMENT COUNT:		10
CONFORMED PERIOD OF REPORT:	20221130
FILED AS OF DATE:		20230201
DATE AS OF CHANGE:		20230201
EFFECTIVENESS DATE:		20230201

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Western Asset Investment Grade Defined Opportunity Trust Inc.
		CENTRAL INDEX KEY:			0001462586
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1130

	FILING VALUES:
		FORM TYPE:		N-CSR
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-22294
		FILM NUMBER:		23575249

	BUSINESS ADDRESS:	
		STREET 1:		620 EIGHTH AVENUE
		STREET 2:		47TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10018
		BUSINESS PHONE:		888-777-0102

	MAIL ADDRESS:	
		STREET 1:		620 EIGHTH AVENUE
		STREET 2:		47TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10018
</SEC-HEADER>
<DOCUMENT>
<TYPE>N-CSR
<SEQUENCE>1
<FILENAME>d391229dncsr.htm
<DESCRIPTION>WESTERN ASSET INVESTMENT GRADE DEFINED OPPORTUNITY TRUST INC. (IGI)
<TEXT>
Document 1 - file: d391229dncsr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CODE
<SEQUENCE>2
<FILENAME>d391229dex99code.htm
<DESCRIPTION>CODE OF ETHICS
<TEXT>
Document 2 - file: d391229dex99code.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>3
<FILENAME>d391229dex99cert.htm
<DESCRIPTION>CERTIFICATION (302)
<TEXT>
Document 3 - file: d391229dex99cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.906CT
<SEQUENCE>4
<FILENAME>d391229dex99906ct.htm
<DESCRIPTION>CERTIFICATION (906)
<TEXT>
Document 4 - file: d391229dex99906ct.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g391229dsp11.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g391229dsp11.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g391229dsp13.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g391229dsp13.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g391229g12u83.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g391229g12u83.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>g391229g57q58.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: g391229g57q58.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>g391229janetrust_photo.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: g391229janetrust_photo.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>g391229westassetlogo.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: g391229westassetlogo.jpg

</DOCUMENT>
</SEC-DOCUMENT>