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| 1989 Geneva Open | |
|---|---|
| Date | 11–17 September |
| Edition | 10th |
| Category | Grand Prix |
| Draw | 32S / 16D |
| Prize money | $190,000 |
| Surface | Clay / outdoor |
| Location | Geneva, Switzerland |
| Champions | |
| Singles | |
| Doubles | |
The 1989 Geneva Open was a men's tennis tournament played on outdoor clay courts that was part of the 1989 Nabisco Grand Prix. It was played at Geneva in Switzerland from 11 September through 17 September 1989. Marc Rosset, who entered the event on a wildcard, won the singles title
Marc Rosset defeated
Guillermo Pérez Roldán 6–4, 7–5
Andrés Gómez /
Alberto Mancini defeated
Mansour Bahrami /
Guillermo Pérez Roldán 6–3, 7–5