1983 Player's Canadian Open – Men's singles

Vitas Gerulaitis was the defending champion, but lost in the third round this year.

Ivan Lendl successfully defended his title, defeating Anders Järryd 6–2, 6–2 in the final.

Seeds

 * 1) 🇺🇸 John McEnroe (semifinals)
 * 2)  Ivan Lendl (champion)
 * 3) 🇺🇸 Jimmy Connors (semifinals)
 * 4) 🇫🇷 Yannick Noah (third round)
 * 5) 🇸🇪 Mats Wilander (second round)
 * 6)  Kevin Curren (quarterfinals)
 * 7) 🇺🇸 Vitas Gerulaitis (third round)
 * 8) 🇺🇸 Johan Kriek (quarterfinals)
 * 9) 🇺🇸 Eliot Teltscher (second round)
 * 10) 🇺🇸 Sandy Mayer (third round)
 * 11)  Tomáš Šmíd (second round)
 * 12) 🇫🇷 Henri Leconte (first round)
 * 13) 🇺🇸 Hank Pfister (first round)
 * 14) 🇵🇱 Wojtek Fibak (second round)
 * 15) 🇺🇸 Robert Van't Hof (second round)
 * 16) 🇺🇸 Brian Teacher (quarterfinals)