1989 Swiss Indoors

The 1989 Swiss Indoors was a men's tennis tournament played on indoor carpet courts at the St. Jakobshalle in Basel, Switzerland that was part of the 1989 Nabisco Grand Prix circuit. It was the 20th edition of the tournament and took place from 3 October until 8 October 1989. Unseeded Jim Courier won the singles title.

Singles
🇺🇸 Jim Courier defeated 🇸🇪 Stefan Edberg 7–6, 3–6, 2–6, 6–0, 7–5
 * It was Courier's first singles title of his career.

Doubles
Udo Riglewski / Michael Stich defeated 🇮🇹 Omar Camporese /  Claudio Mezzadri 6–3, 4–6, 6–0