The 2004 Grand Prix Hassan II was an Association of Tennis Professionals tennis tournament held in Casablanca, Morocco. It was the 20th edition of the tournament and was held from May 17 to May 24.
| 2004 Grand Prix Hassan II | |
|---|---|
| Date | 17–24 May |
| Edition | 20th |
| Surface | Clay / outdoor |
| Location | Casablanca, Morocco |
| Champions | |
| Singles | |
 Santiago Ventura | |
| Doubles | |
 Enzo Artoni / Fernando Vicente | |
Finals edit
Singles edit
Santiago Ventura defeated 
Dominik Hrbatý 6–3, 1–6, 6–4
- It was Ventura's only title of the year and the 1st of his career.
Doubles edit
Enzo Artoni / Fernando Vicente defeated 
Yves Allegro / 
Michael Kohlmann 3–6, 6–0, 6–4
- It was Artoni's only title of the year and the 2nd of his career. It was Vicente's only title of the year and the 4th of his career.