2005 U.S. Men's Clay Court Championships
| 2005 U.S. Men's Clay Court Championships | |
|---|---|
| Date | April 18 – April 25 |
| Edition | 37th |
| Draw | 32S/16D |
| Prize money | $355,000 |
| Surface | Clay / Outdoor |
| Location | Houston, Texas, USA |
| Champions | |
| Singles | |
 Andy Roddick [1] | |
| Doubles | |
 Mark Knowles /  Daniel Nestor [2] | |
The 2005 U.S. Men's Clay Court Championships was an Association of Tennis Professionals men's tennis tournament held in Houston, Texas in the United States. It was the 37th edition of the tournament and was held from April 18 to April 25. Andy Roddick won the singles tournament.
Winners
Men's Singles
Andy Roddick defeated 
Sébastien Grosjean 6–2, 6–2
- It was Roddick's 2nd title of the year and the 19th of his career.
Men's Doubles
Mark Knowles / Daniel Nestor defeated 
Martín García / 
Luis Horna 6–3, 6–4
- It was Knowles's 2nd title of the year and the 37th of his career. It was Nestor's 2nd title of the year and the 39th of his career.