1988 U.S. Men's Clay Court Championships
| 1988 U.S. Men's Clay Court Championships | |
|---|---|
| Date | April 25 – May 2 |
| Edition | 20th |
| Draw | 32S/16D |
| Prize money | $190,000 |
| Surface | Clay / Outdoor |
| Location | Charleston, South Carolina |
| Champions | |
| Singles | |
 Andre Agassi | |
| Doubles | |
 Pieter Aldrich / Danie Visser | |
The 1988 U.S. Men's Clay Court Championships was a Grand Prix tennis tournament held in Charleston, South Carolina in the United States. It was the 20th edition of the tournament and was held from April 25 to May 2.
Finals
Singles
Andre Agassi defeated Jimmy Arias 6–2, 6–2
- It was Agassi's 2nd title of the year and the 3rd of his career.
Doubles
Pieter Aldrich / Danie Visser defeated 
Jorge Lozano / Todd Witsken 7–6, 6–3
- It was Aldrich's only title of the year and the 1st of his career. It was Visser's only title of the year and the 3rd of his career.