| 2004 Grand Prix de Tennis de Lyon | |
|---|---|
| Date | 4–11 October 2004 |
| Edition | 18th |
| Category | International Series |
| Draw | 32S / 16D |
| Prize money | $767,000 |
| Surface | Carpet / indoor |
| Location | Lyon, France |
| Champions | |
| Singles | |
 Robin Söderling[1] | |
| Doubles | |
 Jonathan Erlich /Andy Ram[2] | |
The2004 Grand Prix de Tennis de Lyon was a men'stennis tournament played on indoorcarpet courts. It was played at thePalais des Sports de Gerland inLyon, France, and was part of the2004 ATP Tour. It was the 18th edition of the tournament and took place from 4 October through 11 October 2004. UnseededRobin Söderling won the singles title.
Robin Söderling defeated
Xavier Malisse 6–2, 3–6, 6–4
Jonathan Erlich /Andy Ram defeatedJonas Björkman /
Radek Štěpánek 7–6(7–2), 6–2