| Singles | |
|---|---|
| 2004 Grand Prix de Tennis de Lyon | |
| Champion |
|
| Runner-up |
|
| Final score | 6–2, 3–6, 6–4 |
Rainer Schüttler was the defending champion, but lost in the first round this year.
Robin Söderling won the tournament, beating Xavier Malisse 6–2, 3–6, 6–4 in the final.