1989 Italian Open – Men's singles

Men's singles
1989 Italian Open
Champion Alberto Mancini
Runner-up Andre Agassi
Score6–3, 4–6, 2–6, 7–6, 6–1
Draw64
Seeds16

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.