    <SEC-DOCUMENT>0000891092-18-004923-index.html : 20180626
    <SEC-HEADER>0000891092-18-004923.hdr.sgml : 20180626
    <ACCEPTANCE-DATETIME>20180626081918
    ACCESSION NUMBER:		0000891092-18-004923
    CONFORMED SUBMISSION TYPE:	N-CSRS
    PUBLIC DOCUMENT COUNT:		6
    CONFORMED PERIOD OF REPORT:	20180430
    FILED AS OF DATE:		20180626
    DATE AS OF CHANGE:		20180626
    EFFECTIVENESS DATE:		20180626

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			DNP SELECT INCOME FUND INC
    		CENTRAL INDEX KEY:			0000806628
    		IRS NUMBER:				363480989
    		STATE OF INCORPORATION:			MD
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		N-CSRS
    		SEC ACT:		1940 Act
    		SEC FILE NUMBER:	811-04915
    		FILM NUMBER:		18918302

    	BUSINESS ADDRESS:
    		STREET 1:		PO BOX 32760
    		CITY:			LOUISVILLE
    		STATE:			KY
    		ZIP:			40232
    		BUSINESS PHONE:		3123685510

    	MAIL ADDRESS:
    		STREET 1:		PO BOX 32760
    		CITY:			LOUISVILLE
    		STATE:			KY
    		ZIP:			40232

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	DUFF & PHELPS SELECTED UTILITIES INC
    		DATE OF NAME CHANGE:	19910429
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>N-CSRS
    <SEQUENCE>1
    <FILENAME>e78928ncsrs.htm
    <DESCRIPTION>FORM N-CSRS
    <TEXT>
    Document 1 - file: e78928ncsrs.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.CERT
    <SEQUENCE>2
    <FILENAME>e78928ex99cert.htm
    <DESCRIPTION>CERTIFICATIONS
    <TEXT>
    Document 2 - file: e78928ex99cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.906CERT
    <SEQUENCE>3
    <FILENAME>e78928ex99-6.htm
    <DESCRIPTION>CERTIFICATIONS
    <TEXT>
    Document 3 - file: e78928ex99-6.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.(C)
    <SEQUENCE>4
    <FILENAME>e78928ex99c.htm
    <DESCRIPTION>NOTICES TO SHAREHOLDERS
    <TEXT>
    Document 4 - file: e78928ex99c.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>cover_2nd.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: cover_2nd.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>e78928charts.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: e78928charts.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>