The 1989 Campionati Internazionali di Sicilia was a men's tennis tournament played on outdoor clay courts in Palermo, Italy that was part of the 1989 Nabisco Grand Prix. It was the 11th edition of the tournament and took place from 25 September until 1 October 1989. Seventh-seeded Guillermo Pérez Roldán won the singles title.
See main article: 1989 Campionati Internazionali di Sicilia – Singles. 
Guillermo Pérez Roldán defeated 
Paolo Canè 6–1, 6–4
See main article: 1989 Campionati Internazionali di Sicilia – Doubles. Peter Ballauff / Rüdiger Haas defeated Goran Ivanišević / 
Diego Nargiso 6–2, 6–7, 6–4