Unassociated Document
As filed with the Securities and Exchange Commission on [_______], 2008

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-A
For Registration of Certain Classes of Securities
Pursuant to Section 12(b) or 12(g) of the
Securities Exchange Act of 1934
United States Oil Fund, LP
(Exact name of registrant as specified in its charter)

Delaware
  
20-2830691
(State of incorporation or organization)
  
(I.R.S. Employer Identification No.)

1320 Harbor Bay Parkway, Suite 145, Alameda, California
 
94502
(Address of principal executive offices)
  
(Zip Code)

Securities to be registered pursuant to Section 12(b) of the Act:
 
Title of each class
to be so registered
  
Name of each exchange on
which each class is to be registered
Units of United States Oil Fund, LP
  
NYSE Arca, Inc.

If this Form relates to the registration of a class of securities pursuant to Section 12(b) of the Exchange Act and is effective pursuant to General Instruction A.(c), check the following box. x

If this Form relates to the registration of a class of securities pursuant to Section 12(g) of the Exchange Act and is effective pursuant to General Instruction A.(d), check the following box. ¨

Securities Act registration statement file number to which this form relates: 333-153310

Securities to be registered pursuant to Section 12(g) of the Act:
 
None
(Title of class)


INFORMATION REQUIRED IN REGISTRATION STATEMENT
 
Item 1. Description of the Registrant's Securities to be Registered
 
The securities to be registered hereby are units of United States Oil Fund, LP (“USOF”). The description of the units contained in the sections entitled “The Units,” “Who is the General Partner?,” “What is the Plan of Distribution?” and “U.S. Federal Income Tax Considerations” in the Prospectus included in USOF’s Registration Statement on Form S-3 (File No. 333-153310) filed with the Securities and Exchange Commission on September 3, 2008 as amended from time to time (the “Registration Statement”), is hereby incorporated by reference herein. Any form of prospectus or prospectus supplement to the Registration Statement that includes such descriptions and that are subsequently filed are hereby also incorporated by reference herein.
 
Item 2. Exhibits
 
The following exhibits to this registration statement on Form 8-A are incorporated by reference from the documents specified which have been filed with the Securities and Exchange Commission.

Exhibit No.
  
Description
1
  
USOF’s Form S-3 Registration Statement, as amended (Registration No. 333-153310), filed with the Securities and Exchange Commission on September 3, 2008 (incorporated herein by reference).
2
  
Fifth Amended and Restated Agreement of Limited Partnership, incorporated herein by reference to Exhibit 10.1 to USOF’s Current Report on Form 8-K filed on October 14, 2008.
3
  
Certificate of Limited Partnership of the Registrant, incorporated herein by reference to Exhibit 3.2 to USOF’s Form S-1 Registration Statement (Registration No. 333-124950) filed on May 16, 2005.


SIGNATURE

Pursuant to the requirements of Section 12 of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereto duly authorized.
 
Date: November 21, 2008
 
   
   
By:
United States Commodity Funds LLC
 
its General Partner
   
/s/ Howard Mah
 
Howard Mah
 
Chief Financial Officer


INDEX TO EXHIBITS

Exhibit No.
  
Description
1
  
USOF’s Form S-3 Registration Statement, as amended (Registration No. 333-153310), filed with the Securities and Exchange Commission on September 3, 2008 (incorporated herein by reference).
2
  
Fifth Amended and Restated Agreement of Limited Partnership, incorporated herein by reference to Exhibit 10.1 to USOF’s Current Report on Form 8-K filed on October 14, 2008.
3
  
Certificate of Limited Partnership of the Registrant, incorporated herein by reference to Exhibit 3.2 to USOF’s Form S-1 Registration Statement (Registration No. 333-124950) filed on May 16, 2005.