2005 Allianz Suisse Open Gstaad – Singles
| Singles | |
|---|---|
| 2005 Allianz Suisse Open Gstaad | |
| Champion | Gastón Gaudio |
| Runner-up | Stanislas Wawrinka |
| Score | 6–4, 6–4 |
Roger Federer was the defending champion, but did not participate this year.
Gastón Gaudio won the tournament, beating Stanislas Wawrinka in the final, 6–4, 6–4.