1989 Campionati Internazionali di Sicilia – Singles

Mats Wilander was the defending champion, but did not compete this year.

Guillermo Pérez Roldán won the title by defeating Paolo Canè 6–1, 6–4 in the final.

Seeds
• # 🇦🇷 Alberto Mancini (quarterfinals)

• # 🇦🇷 Martín Jaite (first round)

• # 🇦🇹 Thomas Muster (first round)

• # 🇮🇹 Paolo Canè (final)

• # 🇪🇸 Sergi Bruguera (quarterfinals)

• # 🇪🇨 Andrés Gómez (first round)

• # 🇦🇷 Guillermo Pérez Roldán (champion)

• # Goran Ivanišević (semifinals)