The 2009 USA Sevens competition took place on February 14 and 15 at Petco Park in San Diego, California.

It was the fourth Cup trophy in the 2008-09 IRB Sevens World Series.

Argentina won the 2009 USA Sevens, defeating England 19–14 in the cup final.

This was the last edition of the USA Sevens to be held in San Diego.

Starting with the 2010 edition, the event was moved to Sam Boyd Stadium near Las Vegas.