2004 Davidoff Swiss Indoors – Singles

Guillermo Coria was the defending champion, but did not participate this year.

Jiří Novák won the tournament, beating David Nalbandian in the final, 5–7, 6–3, 6–4, 1–6, 6–2.

Seeds
• # Roger Federer (withdrew due to a thigh strain)

• # 🇬🇧 Tim Henman (quarterfinals)

• # 🇦🇷 Gastón Gaudio (second round)

• # 🇦🇷 David Nalbandian (final)

• # 🇪🇸 Tommy Robredo (second round, withdrew)

• # 🇩🇪 Rainer Schüttler (quarterfinals)

• # Nicolás Massú (semifinals)

• # Fernando González (first round)