2004 Estoril Open – Men's singles
| Men's singles | |
|---|---|
| 2004 Estoril Open | |
| Champion | Juan Ignacio Chela | 
| Runner-up | Marat Safin | 
| Score | 6–7(2–7), 6–3, 6–3 | 
| Draw | 32 | 
| Seeds | 8 | 
Nikolay Davydenko was the defending champion but lost in the first round to Radek Štěpánek.
Juan Ignacio Chela won in the final 6–7(2–7), 6–3, 6–3 against Marat Safin.