1986 Milan Indoor – Singles

John McEnroe was the defending champion, but did not participate this year.

Ivan Lendl won the tournament, beating Joakim Nyström in the final, 6–2, 6–2, 6–4.

Seeds

 * 1)  Ivan Lendl (champion)
 * 2) 🇸🇪 Joakim Nyström (final)
 * 3) 🇸🇪 Anders Järryd (semifinals)
 * 4)  Miloslav Mečíř (semifinals)
 * 5) 🇸🇪 Henrik Sundström (first round)
 * 6)  Tomáš Šmíd (first round)
 * 7)  Jakob Hlasek (quarterfinals)
 * 8) 🇸🇪 Jan Gunnarsson (second round)