<SEC-DOCUMENT>0000728889-18-001717-index.html : 20181029
<SEC-HEADER>0000728889-18-001717.hdr.sgml : 20181029
<ACCEPTANCE-DATETIME>20181029131635
ACCESSION NUMBER:		0000728889-18-001717
CONFORMED SUBMISSION TYPE:	497K
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20181029
DATE AS OF CHANGE:		20181029
EFFECTIVENESS DATE:		20181029

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			OPPENHEIMER DEVELOPING MARKETS FUND
		CENTRAL INDEX KEY:			0001015986
		IRS NUMBER:				936305075
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0831

	FILING VALUES:
		FORM TYPE:		497K
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-05579
		FILM NUMBER:		181143555

	BUSINESS ADDRESS:	
		STREET 1:		6803 SOUTH TUCSON WAY
		STREET 2:		N/A
		CITY:			CENTENNIAL
		STATE:			CO
		ZIP:			80112-3924
		BUSINESS PHONE:		303-768-3200

	MAIL ADDRESS:	
		STREET 1:		6803 SOUTH TUCSON WAY
		STREET 2:		N/A
		CITY:			CENTENNIAL
		STATE:			CO
		ZIP:			80112-3924
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<OWNER-CIK>0001015986
<SERIES-ID>S000006967
<SERIES-NAME>OPPENHEIMER DEVELOPING MARKETS FUND
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000019011
<CLASS-CONTRACT-NAME>A
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000019013
<CLASS-CONTRACT-NAME>C
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000019014
<CLASS-CONTRACT-NAME>R
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000019015
<CLASS-CONTRACT-NAME>Y
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000109466
<CLASS-CONTRACT-NAME>I
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<TYPE>497K
<SEQUENCE>1
<FILENAME>summarypro.htm
<TEXT>
Document 1 - file: summarypro.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>img462bf5191.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: img462bf5191.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g785.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g785.jpg

</DOCUMENT>
</SEC-DOCUMENT>