| Singles | |
|---|---|
| 2003 Mutua Madrileña Masters Madrid | |
| Champion |
|
| Runner-up |
|
| Final score | 6–3, 6–4, 6–3 |
Andre Agassi was the defending champion but did not compete that year.
Juan Carlos Ferrero won in the final 6–3, 6–4, 6–3 against Nicolás Massú.
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.