The 2004 Allianz Suisse Open Gstaad was a tennis tournament played on outdoor clay courts at the Roy Emerson Arena in Gstaad in Switzerland and was part of the International Series of the 2004 ATP Tour. The tournament ran from July 5 through July 11, 2004.
| 2004 Allianz Suisse Open Gstaad | |
|---|---|
| Date | 5–11 July |
| Edition | 59th |
| Category | International Series |
| Draw | 32S / 16D |
| Prize money | $525,000 |
| Surface | Clay / outdoor |
| Location | Gstaad, Switzerland |
| Venue | Roy Emerson Arena |
| Champions | |
| Singles | |
 Roger Federer | |
| Doubles | |
 Leander Paes /  David Rikl | |
Finals edit
Singles edit
Roger Federer defeated 
Igor Andreev 6–2, 6–3, 5–7, 6–3
- It was Federer's 7th title of the year and the 18th of his career.
Doubles edit
Leander Paes / David Rikl defeated Marc Rosset / Stanislas Wawrinka 6–4, 6–2
- It was Paes' 2nd title of the year and the 29th of his career. It was Rikl's 2nd title of the year and the 30th of his career.