| Singles | |
|---|---|
| 2004 Mutua Madrileña Masters Madrid | |
| Champion |
|
| Runner-up |
|
| Final score | 6–2, 6–4, 6–3 |
Juan Carlos Ferrero was the defending champion, but lost to Luis Horna in the second round.
Marat Safin won in the final 6–2, 6–4, 6–3, against David Nalbandian.
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated. All sixteen seeds received a bye into the second round.