1986 Player's Canadian Open – Men's singles

John McEnroe was the defending champion, but lost in the third round this year.

Boris Becker won the title, defeating Stefan Edberg 6–4, 3–6, 6–3 in the final.

Seeds
• # Ivan Lendl (third round)

• # Boris Becker (champion)

• # 🇫🇷 Yannick Noah (third round)

• # 🇸🇪 Stefan Edberg (final)

• # 🇺🇸 John McEnroe (third round)

• # 🇺🇸 Tim Mayotte (second round)

• # 🇺🇸 Brad Gilbert (third round)

• # 🇺🇸 Jimmy Arias (third round)

• # Jakob Hlasek (second round)

• # Slobodan Živojinović (second round)

• # 🇺🇸 Matt Anger (first round)

• # 🇺🇸 Robert Seguso (quarterfinals)

• # 🇺🇸 Tim Wilkison (third round)

• # 🇺🇸 David Pate (first round)

• # 🇺🇸 Kevin Curren (quarterfinals)

• # 🇮🇳 Ramesh Krishnan (second round)