1989 Italian Open – Men's singles
| Men's singles | |
|---|---|
| 1989 Italian Open | |
| Champion | Alberto Mancini |
| Runner-up | Andre Agassi |
| Score | 6–3, 4–6, 2–6, 7–6, 6–1 |
| Draw | 64 |
| Seeds | 16 |
Alberto Mancini defeated Andre Agassi in the final, 6–3, 4–6, 2–6, 7–6, 6–1, to win the men's singles tennis title at the 1989 Italian Open. Mancini saved a championship point in the fourth set.
Ivan Lendl was the defending champion, but did not compete this year.