1980 Stockholm Open – Men's singles

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

Björn Borg won the title, defeating John McEnroe 6–3, 6–4 in the final.

Seeds

 * 1) 🇸🇪 Björn Borg (champion)
 * 2) 🇺🇸 John McEnroe (final)
 * 3) 🇺🇸 Gene Mayer (semifinals)
 * 4) 🇺🇸 Harold Solomon (first round)
 * 5) 🇺🇸 Brian Gottfried (second round)
 * 6) 🇺🇸 Eliot Teltscher (second round)
 * 7) 🇵🇱 Wojtek Fibak (second round)
 * 8) 🇺🇸 Victor Amaya (second round)