Filed pursuant to Rule 424(b)(3)

File No. 333-176765






Supplement dated July 30, 2012




Prospectus dated June 11, 2012




This supplement contains information, which amends, supplements or modifies certain information contained in the Prospectus of United States Oil Fund, LP (“USOF”) dated June 11, 2012. Please read it and keep it with your Prospectus for future reference.


Effective August 1, 2012, the prospectus is amended to reflect the new address for USOF and its general partner, United States Commodity Funds LLC (“USCF”). The new address for the principal office and books and records for USOF and USCF is:


1999 Harrison Street, Suite 1530

Oakland, California 94612


The telephone number for USOF and USCF remains 510.522.9600.


All references in the prospectus are updated accordingly effective August 1, 2012.