1979 Stockholm Open – Men's singles

John McEnroe was the defending champion.

McEnroe successfully defended his title, defeating Gene Mayer 6–7, 6–3, 6–3 in the final.

Seeds

 * 1) 🇺🇸 John McEnroe (champion)
 * 2) 🇺🇸 Harold Solomon (quarterfinals)
 * 3) 🇺🇸 Peter Fleming (quarterfinals)
 * 4) 🇺🇸 Gene Mayer (final)
 * 5) 🇵🇱 Wojtek Fibak (semifinals)
 * 6) 🇺🇸 Tim Gullikson (quarterfinals)
 * 7) 🇺🇸 Brian Gottfried (semifinals, retired)
 * 8) 🇺🇸 Stan Smith (second round)
 * 9) N/A
 * 10) 🇫🇷 Yannick Noah (first round)
 * 11) N/A
 * 12) N/A
 * 13)  Tomáš Šmíd (third round)
 * 14) 🇺🇸 Marty Riessen (second round)
 * 15) 🇮🇳 Vijay Amritraj (third round)
 * 16) 🇺🇸 Hank Pfister (third round)