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|  Title      of Each Class                                                                          |   | Name      of Each Exchangeon      Which Registered |
|---------------------------------------------------------------------------------------------------------|--------|----------------------------------------------------|
| American      Depositary Shares, each representing one Class D Share, par value 10 pesos      per share |   | New      York Stock Exchange                       |
| Class      D Shares                                                                                     |   | New      York Stock Exchange*                      |

| * | Listed      not for trading but only in connection with the registration of American      Depositary Shares. |
|---|--------------------------------------------------------------------------------------------------------------|

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| Class      A Shares | 3,764       |
|---------------------|-------------|
| Class      B Shares | 7,624       |
| Class      C Shares | 105,736     |
| Class      D Shares | 393,195,669 |
|                | 393,312,793 |

| Indicate      by check mark if the registrant is a well-known seasoned issuer, as      defined in Rule 405 of the Securities Act.                                                                                                                                                                                                                                                 | Yes          No S          |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------|
|                                                                                                                                                                                                                                                                                                                                                                              |                                           |
| If      this report is an annual or transition report, indicate by check mark if      the registrant is not required to file reports pursuant to Section 13 OR      15(d) of the Securities Exchange Act of 1934.                                                                                                                                                                 | Yes          No S          |
|                                                                                                                                                                                                                                                                                                                                                                              |                                           |
| Note      – Checking the box above will not relieve any registrant required to file      reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of      1934 from their obligations under those Sections.                                                                                                                                                   |
|                                                                                                                                                                                                                                                                                                                                                                              |
| Indicate      by check mark whether the registrant (1) has filed all reports required to      be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934      during the preceding 12 months (or for such shorter period that the      registrant was required to file such reports), and (2) has been subject to      such filing requirements for the past 90 days. | Yes S      No                             |
|                                                                                                                                                                                                                                                                                                                                                                              |                                           |
| Indicate      by check mark whether the registrant is a large accelerated filer, an      accelerated filer, or a non-accelerated filer. See definition of      “accelerated filer and large accelerated filer” in Rule 12b-2 of the      Exchange Act. (Check one):                                                                                                   |
|                                                                                                                                                                                                                                                                                                                                                                              |
| Large      accelerated filer x    Accelerated      filer  o     Non-accelerated      filer  o                                                                                                                                                                                                                         |
|                                                                                                                                                                                                                                                                                                                                                                              |
| Indicate      by check mark which financial statement item the registrant has elected to      follow.                                                                                                                                                                                                                                                                             | Item      17     Item 18 S |
|                                                                                                                                                                                                                                                                                                                                                                              |                                           |
| If      this is an annual report, indicate by check mark whether the registrant is      a shell company (as defined in Rule 12b-2 of the Exchange    Act)                                                                                                                                                                                                                         | Yes          No S          |

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2007 Form 20-F

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|   | YPF      Sociedad Anónima |                             |
|--------|--------------------------------|----------------------------------|
|   |                           |                             |   |
|   |                           |                             |   |
|   | By:                            | /s/      Walter Cristian Forwood |   |
|   |                           | Name:                            | Walter      Cristian Forwood |   |
|   |                           | Title:                           | Chief      Financial Officer |   |

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