<SEC-DOCUMENT>0000053808-17-000078-index.html : 20170825
<SEC-HEADER>0000053808-17-000078.hdr.sgml : 20170825
<ACCEPTANCE-DATETIME>20170825124805
ACCESSION NUMBER:		0000053808-17-000078
CONFORMED SUBMISSION TYPE:	N-CSRS
PUBLIC DOCUMENT COUNT:		7
CONFORMED PERIOD OF REPORT:	20170630
FILED AS OF DATE:		20170825
DATE AS OF CHANGE:		20170825
EFFECTIVENESS DATE:		20170825

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DREYFUS INVESTMENT FUNDS
		CENTRAL INDEX KEY:			0000799295
		IRS NUMBER:				043106135
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		N-CSRS
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-04813
		FILM NUMBER:		171051225

	BUSINESS ADDRESS:	
		STREET 1:		200 PARK AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10166
		BUSINESS PHONE:		212-922-6000

	MAIL ADDRESS:	
		STREET 1:		200 PARK AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10166

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MELLON INSTITUTIONAL FUNDS INVESTMENT TRUST
		DATE OF NAME CHANGE:	20030707

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	STANDISH AYER & WOOD INVESTMENT TRUST
		DATE OF NAME CHANGE:	19920703
<SERIES-AND-CLASSES-CONTRACTS-DATA>
<EXISTING-SERIES-AND-CLASSES-CONTRACTS>
<SERIES>
<OWNER-CIK>0000799295
<SERIES-ID>S000011502
<SERIES-NAME>Dreyfus/Standish Global Fixed Income Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000031763
<CLASS-CONTRACT-NAME>Dreyfus/Standish Global Fixed Income Fund - Class I
<CLASS-CONTRACT-TICKER-SYMBOL>SDGIX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000081694
<CLASS-CONTRACT-NAME>Class A
<CLASS-CONTRACT-TICKER-SYMBOL>DHGAX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000081695
<CLASS-CONTRACT-NAME>Class C
<CLASS-CONTRACT-TICKER-SYMBOL>DHGCX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000130461
<CLASS-CONTRACT-NAME>Class Y
<CLASS-CONTRACT-TICKER-SYMBOL>DSDYX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000188042
<CLASS-CONTRACT-NAME>Class T
<CLASS-CONTRACT-TICKER-SYMBOL>DHGTX
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<TYPE>N-CSRS
<SEQUENCE>1
<FILENAME>lp1_dif.htm
<DESCRIPTION>SEMI-ANNUAL REPORT
<TEXT>
Document 1 - file: lp1_dif.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>2
<FILENAME>exhibit302-dif.htm
<DESCRIPTION>CERTIFICATION REQUIRED BY RULE 30-2
<TEXT>
Document 2 - file: exhibit302-dif.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.906 CERT
<SEQUENCE>3
<FILENAME>exhibit906-dif.htm
<DESCRIPTION>CERTIFICATION REQUIRED BY SECTION 906
<TEXT>
Document 3 - file: exhibit906-dif.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>x17082511224300.jpg
<TEXT>
Document 5 - file: x17082511224300.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>x17082511224400.jpg
<TEXT>
Document 6 - file: x17082511224400.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>x17082511224401.jpg
<TEXT>
Document 7 - file: x17082511224401.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>x17082511225000.jpg
<TEXT>
Document 8 - file: x17082511225000.jpg

</DOCUMENT>
</SEC-DOCUMENT>