| Singles | |
|---|---|
| 1998 Legg Mason Tennis Classic | |
| Champion |
|
| Runner-up |
|
| Final score | 6–2, 6–0 |
The 1998 Legg Mason Tennis Classic was a men's tennis tournament played on outdoor hard courts in Washington, D.C., United States, that was part of the International Series Gold of the 1998 ATP Tour. It was the twenty-ninth edition of the tournament and was held 20 July – 26 July.
Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated.