**Exhibit
      31.1**




**CERTIFICATION
          PURSUANT TO**
 **SECTION
          302 OF THE SARBANES-OXLEY ACT**
 
 
 I,
          Nicholas Gerber, Chief Executive Officer of Victoria Bay Asset Management,
          LLC,
          general partner of United States Oil Fund, LP (the "Registrant"), certify
          that:
 
 1.
          I have
          reviewed this report on Form 10-Q of the Registrant;
 
 2.
          Based
          on my knowledge, this report does not contain any untrue statement of a
          material
          fact or omit to state a material fact necessary to make the statements
          made, in
          light of the circumstances under which such statements were made, not misleading
          with respect to the period covered by this report;
 
 3.
          Based
          on my knowledge, the financial statements, and other financial information
          included in this report, fairly present in all material respects the financial
          condition, results of operations, changes in net assets, and cash flows
          (if the
          financial statements are required to include a statement of cash flows)
          of the
          Registrant as of, and for, the periods presented in this report;
 
 4.
          The
          Registrant's other certifying officer(s) and I are responsible for establishing
          and maintaining disclosure controls and procedures (as defined in Exchange
          Act
          Rules 13a-15(e) and 15d-15(e)) for the Registrant and have:
 
 (a)
          designed such disclosure controls and procedures, or caused such disclosure
          controls and procedures to be designed under our supervision, to ensure
          that
          material information relating to the Registrant, including its consolidated
          subsidiaries, is made known to us by others within those entities, particularly
          during the period in which this report is being prepared;
  (b)
          evaluated the effectiveness of the Registrant's disclosure controls and
          procedures and presented in this report our conclusions about the effectiveness
          of the disclosure controls and procedures, as of the end of the period
          covered
          by this report based on such evaluation; and
 
 (c)
          disclosed in this report any change in the Registrant's internal control
          over
          financial reporting that occurred during the Registrant's most recent fiscal
          quarter that has materially affected, or is reasonably likely to materially
          affect, the Registrant's internal control over financial reporting;
          and
 
 5.
          The
          Registrant's other certifying officer(s) and I have disclosed to the
          Registrant's auditors and the audit committee of the Registrant's board
          of
          directors (or persons performing the equivalent functions):
 
 (a)
          All
          significant deficiencies and material weaknesses in the design or operation
          of
          internal control over financial reporting which are reasonably likely to
          adversely affect the Registrant's ability to record, process, summarize,
          and
          report financial information; and
 
 (b)
          Any
          fraud, whether or not material, that involves management or other employees
          who
          have a significant role in the Registrant's internal control over financial
          reporting.
 
 
 
 Date:
          May
          15, 2007
 
 
 /s/
          Nicholas D. Gerber
 Nicholas
          D. Gerber
 Chief
          Executive Officer