The 2009 U.S. Men's Clay Court Championships is a men's tennis tournament played on outdoor clay courts. It is the 41st edition of the U.S. Men's Clay Court Championships, and is an ATP World Tour 250 event. It takes place at River Oaks Country Club in Houston, Texas, United States, from April 6 through April 12, 2009. Unseeded Lleyton Hewitt won the singles title.
See main article: 2009 U.S. Men's Clay Court Championships – Singles. 
Lleyton Hewitt defeated 
Wayne Odesnik 6–2, 7–5
Bob Bryan / Mike Bryan defeated Jesse Levine / Ryan Sweeting 6–1, 6–2