Roger Federer was the defending champion but did not compete that year.
Dominik Hrbatý won in the final 4–6, 6–4, 6–4 against Robin Söderling.
Seeds
Juan Carlos Ferrero (first round) Guillermo Coria (second round) Paradorn Srichaphan (first round) Max Mirnyi (quarterfinals) Fernando González (quarterfinals) Albert Costa (second round) Arnaud Clément (semifinals) Marat Safin (second round)
Draw
Finals
Top half
Bottom half
External links 2004 Open 13 Singles draw 2004 Open 13 Singles Qualifying draw