1981 Stockholm Open – Singles

Björn Borg was the defending champion, but did not participate this year.

Gene Mayer won the title, defeating Sandy Mayer 6–4, 6–2 in the final.

Seeds

 * 1) 🇺🇸 Jimmy Connors (semifinals)
 * 2) 🇺🇸 Roscoe Tanner (second round, withdrew)
 * 3) 🇺🇸 Gene Mayer (champion)
 * 4) 🇫🇷 Yannick Noah (third round)
 * 5) 🇺🇸 Brian Gottfried (second round)
 * 6)  Johan Kriek (second round)
 * 7) 🇺🇸 Harold Solomon (first round)
 * 8) 🇺🇸 Stan Smith (second round)
 * 9)  Tomáš Šmíd (second round)
 * 10) 🇺🇸 Fritz Buehning (third round, withdrew)
 * 11) 🇺🇸 Sandy Mayer (final)
 * 12)  Rolf Gehring (second round)
 * 13) 🇺🇸 Tim Mayotte (third round)
 * 14) 🇺🇸 Robert Lutz (second round)
 * 15)  Kevin Curren (second round)
 * 16) 🇧🇷 Carlos Kirmayr (second round)