The 1990 Italian Open (known as the Peugeot Italian Open for sponsorship reasons) was a tennis tournament played on outdoor clay courts. It was the 47th edition of the Italian Open, and was part of the ATP Super 9 of the 1990 ATP Tour, and of the Tier I Series of the 1990 WTA Tour. Both the men's and the women's events were held at the Foro Italico in Rome, Italy. The women's tournament was played from 7 May through 13 May 1990, and the men's tournament was played from 13 May through 21 May 1990. Thomas Muster and Monica Seles won the singles titles.

Finals

Men's singles

🇦🇹 Thomas Muster defeated Andrei Chesnokov 6–1, 6–3, 6–1

Women's singles

Monica Seles defeated 🇺🇸 Martina Navratilova 6–1, 6–1

Men's doubles

🇪🇸 Sergio Casal / 🇪🇸 Emilio Sánchez defeated 🇺🇸 Jim Courier / 🇺🇸 Martin Davis 7–6, 7–5

Women's doubles

🇨🇦 Helen Kelesi / Monica Seles defeated 🇮🇹 Laura Garrone / 🇮🇹 Laura Golarsa 6–3, 6–4