1989 Swiss Indoors – Singles

Stefan Edberg was the defending champion, but lost in the final to Jim Courier. The score was 7–6, 3–6, 2–6, 6–0, 7–5 in the final.

Seeds
• # 🇸🇪 Stefan Edberg (final)

• # Jakob Hlasek (second round)

• # 🇺🇸 Jay Berger (first round)

• # 🇺🇸 Aaron Krickstein (second round)

• # 🇺🇸 Jimmy Connors (semifinals)

• # Andrei Chesnokov (first round)

• # 🇮🇱 Amos Mansdorf (first round)

• # 🇪🇨 Andrés Gómez (semifinals)