1990 Campionati Internazionali di Sicilia
Date	24–30 September
Edition	12th
Category	World Series
Draw	32S / 16D
Prize money	$270,000
Surface	Clay / outdoor
Location	Palermo, Italy
Champions
Singles
Franco Davín[1]
Doubles
Sergio Casal / Emilio Sánchez[2]
← 1989 · Campionati Internazionali di Sicilia · 1991 →

The 1990 Campionati Internazionali di Sicilia was a men's tennis tournament played on outdoor clay courts in Palermo, Italy that was part of the World Series of the 1990 ATP Tour. It was the 12th edition of the tournament and took place from 24 September until 30 September 1990. Seventh-seeded Franco Davín won the singles title.

Franco Davín defeated Juan Aguilera 6–1, 6–1

• It was Davín's 1st singles title of the year and the 2nd of his career.

Sergio Casal / Emilio Sánchez defeated Carlos Costa / Horacio de la Peña 6–3, 6–4

• ITF – tournament edition details