1991 Muratti Time Indoor – Singles

Ivan Lendl was the defending champion, but lost in the second round to Cristiano Caratti.

Alexander Volkov won the title by defeating Caratti 6–1, 7–5 in the final.

Seeds
• # Ivan Lendl (second round)

• # Goran Ivanišević (first round)

• # Andrei Chesnokov (second round)

• # 🇺🇸 Michael Chang (first rounf)

• # Jakob Hlasek (semifinals)

• # 🇺🇸 Aaron Krickstein (quarterfinals)

• # Marc Rosset (first round)

• # Alexander Volkov (champion)