    <SEC-DOCUMENT>0001133228-25-007756-index.html : 20250730
    <SEC-HEADER>0001133228-25-007756.hdr.sgml : 20250730
    <ACCEPTANCE-DATETIME>20250730141327
    ACCESSION NUMBER:		0001133228-25-007756
    CONFORMED SUBMISSION TYPE:	N-CSR
    PUBLIC DOCUMENT COUNT:		11
    CONFORMED PERIOD OF REPORT:	20250531
    FILED AS OF DATE:		20250730
    DATE AS OF CHANGE:		20250730
    EFFECTIVENESS DATE:		20250730

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Western Asset High Yield Defined Opportunity Fund Inc.
    		CENTRAL INDEX KEY:			0001497186
    		ORGANIZATION NAME:
    		EIN:				273075810
    		STATE OF INCORPORATION:			MD
    		FISCAL YEAR END:			0531

    	FILING VALUES:
    		FORM TYPE:		N-CSR
    		SEC ACT:		1940 Act
    		SEC FILE NUMBER:	811-22444
    		FILM NUMBER:		251166142

    	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>wahydof-efp16580_ncsr.htm
    <DESCRIPTION>WESTERN ASSET HIGH YIELD DEFINED OPPORTUNITY FUND INC - N-CSR
    <TEXT>
    Document 1 - file: wahydof-efp16580_ncsr.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.CODEETH
    <SEQUENCE>2
    <FILENAME>wahydof-efp16580_ex99codeeth.htm
    <DESCRIPTION>CODE OF ETHICS
    <TEXT>
    Document 2 - file: wahydof-efp16580_ex99codeeth.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.CERT
    <SEQUENCE>3
    <FILENAME>wahydof-efp16580_ex99cert.htm
    <DESCRIPTION>CERTIFICATIONS PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002
    <TEXT>
    Document 3 - file: wahydof-efp16580_ex99cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.906CERT
    <SEQUENCE>4
    <FILENAME>wahydof-efp16580_ex99906cert.htm
    <DESCRIPTION>CERTIFICATIONS PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
    <TEXT>
    Document 4 - file: wahydof-efp16580_ex99906cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>img3b1de4bc2.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: img3b1de4bc2.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>img9ace33c96.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: img9ace33c96.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>img447ef7164.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: img447ef7164.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>img3277e0a21.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: img3277e0a21.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>img7367ff273.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: img7367ff273.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>img481644157.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: img481644157.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>imgd2043eeb5.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: imgd2043eeb5.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>