| Men's Singles | |
|---|---|
| 2004 Internazionali BNL d'Italia | |
| Champion |
|
| Runner-up |
|
| Final score | 6–3, 6–3, 6–1 |
Félix Mantilla was the defending champion but lost in the second round to Mariano Zabaleta.
Carlos Moyá won in the final 6–3, 6–3, 6–1 against David Nalbandian.
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.