1986 Toronto Indoor – Singles

Kevin Curren was the defending champion, but did not participate this year.

Joakim Nyström won the tournament, beating Milan Šrejber in the final, 6–1, 6–4.

Seeds

 * 1) 🇸🇪 Joakim Nyström (champion)
 * 2) 🇺🇸 Aaron Krickstein (first round)
 * 3) 🇵🇱 Wojtek Fibak (first round)
 * 4) 🇺🇸 Jonathan Canter (semifinals)
 * 5)  Christo Steyn (first round)
 * 6) 🇲🇽 Francisco Maciel (first round)
 * 7) 🇮🇱 Shahar Perkiss (second round)
 * 8) 🇺🇸 Mark Dickson (first round)