Exhibit 13.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The certification set forth below is being submitted in connection with the Annual Report on Form 20-F for the year ended December 31, 2009 (the “Annual Report”) for the purposes of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934 (the “Exchange Act”) and Section 1350 of Chapter 63 of Title 18 of the United States Code.

Sebastián Eskenazi, the Chief Executive Officer, Guillermo Reda, the Chief Financial Officer and Ángel Ramos Sánchez, the Director of Administration and Tax of YPF Sociedad Anónima, each certifies that, to the best of his knowledge:

1. the Annual Report fully complies with the requirements of Section 13(a) or 15(d) of the Exchange Act; and

2. the information contained in the Annual Report fairly presents, in all material respects, the financial condition and results of operations of YPF Sociedad Anónima.

Date: June 29, 2010

By:	/s/ Sebastián Eskenazi
	Name:	Sebastián Eskenazi
	Title:	Chief Executive Officer
By:	/s/ Guillermo Reda
	Name:	Guillermo Reda
	Title:	Chief Financial Officer
By:	/s/ Ángel Ramos Sánchez
	Name:	Ángel Ramos Sánchez
	Title:	Director of Administration and Tax