2004 Czech Indoor Open – Singles

The 2004 Czech Indoor Open Open was a men's tennis tournament played on indoor hard courts in Průhonice, Czech Republic, and was part of the 2004 ATP Challenger Series.

This was the second edition of the event and was held from 23 to 28 November 2004.

The defending champion Mario Ančić didn't enlist into this edition.

Tuomas Ketola, at his first participation in the tournament, won in the final 1–6, 6–4, 6–3, against Lukáš Dlouhý.

Seeds
• #🇨🇭 Ivo Heuberger (second round)

• #🇮🇹 Daniele Bracciali (first round)

• #🇧🇪 Dick Norman (first round)

• #🇨🇿 Jan Vacek (first round)

• #🇩🇪 Dieter Kindlmann (semifinals)

• #🇬🇧 Alex Bogdanović (second round)

• #🇰🇿 Yuri Schukin (quarterfinals)

• #🇮🇹 Federico Luzzi (first round)