| Men's Singles | |
|---|---|
| 1983 Japan Open Tennis Championships | |
| Champion |
|
| Runner-up |
|
| Final score | 7–5, 3–6, 6–1 |
| Draw | 64 (7Q) |
| Seeds | 16 |
Jimmy Arias was the defending champion, but did not participate this year.
Eliot Teltscher won the title, defeating Andrés Gómez in the final, 7–5, 3–6, 6–1.