1989 Stockholm Open – Singles

Boris Becker was the defending champion but lost in the third round to Jan Gunnarsson.

Ivan Lendl won in the final 7–5, 6–0, 6–3 against Magnus Gustafsson.

Seeds
All sixteen seeds received a bye to the second round. • # Ivan Lendl (champion)

• # Boris Becker (third round)

• # 🇸🇪 Stefan Edberg (semifinals)

• # 🇺🇸 Andre Agassi (quarterfinals)

• # 🇺🇸 Aaron Krickstein (third round)

• # 🇦🇷 Alberto Mancini (second round)

• # 🇺🇸 Tim Mayotte (quarterfinals)

• # 🇸🇪 Mats Wilander (semifinals)

• # 🇫🇷 Yannick Noah (second round)

• # 🇦🇹 Thomas Muster (third round)

• # 🇺🇸 Jim Courier (quarterfinals)

• # 🇮🇹 Paolo Canè (second round)

• # 🇦🇹 Horst Skoff (third round)

• # Goran Prpić (second round)

• # 🇸🇪 Jan Gunnarsson (quarterfinals)

• # 🇸🇪 Anders Järryd (third round)