Exhibit 23.3

DEGOLYER AND MACNAUGHTON

5001 SPRING VALLEY ROAD
SUITE 800 EAST
DALLAS, TEXAS 75244

April 12, 2011

YPF S.A.
Macacha Guemes 515
C1106BKK Buenos Aires
Argentina

Ladies and Gentlemen:

     We hereby consent to the references to DeGolyer and MacNaughton and to the inclusion of our two third-party letter reports dated January 25, 2011, as set forth under the sections “Information on the Company—Exploration and Production” and “Exhibits” in YPF SA.’s report on Form 20-F for the year ended December 31, 2010 to be filed with the United States Securities and Exchange Commission, and the incorporation by reference of the same information in Form F-3 documents that have been filed with the Securities and Exchange Commission by YPF S A.

     Our third party letter reports contain our independent estimates of the proved oil, natural gas liquids, marketable gas, and oil equivalent reserves as of September 30, 2010, of certain selected properties in the Neuquina and San Jorge basins in Argentina in which YPF S.A. holds interests.

Very truly yours,

/s/ DeGOLYER and MacNAUGHTON

DeGOLYER and MacNAUGHTON

Texas Registered Engineering Firm F-716