CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Trustees and Shareholders of
Oppenheimer Developing Markets Fund:
 
We consent to the use in this Registration Statement of Oppenheimer Developing Markets Fund, of our report dated October 20, 2009, relating to the financial statements and financial highlights of Oppenheimer Developing Markets Fund, appearing in the Statement of Additional Information, which is part of such Registration Statement, and to the references to our firm under the headings “Financial Highlights” appearing in the Prospectus, which is also part of such Registration Statement and “Independent Registered Public Accounting Firm” appearing in the Statement of Additional Information.
 
 
 
/s/ KPMG LLP
KPMG LLP
 
Denver, Colorado
December 21, 2009