The 2004 Croatia Open was a tennis tournament played on outdoor clay courts at the ITC Stella Maris in Umag in Croatia and was part of the International Series of the 2004 ATP Tour. The tournament ran from 19 July through 25 July 2004.
Finals
Singles
Guillermo Cañas defeated 
Filippo Volandri 7–5, 6–3
Doubles
José Acasuso / 
Flávio Saretta defeated 
Jaroslav Levinský / David Škoch 4–6, 6–2, 6–4
References
- ^ "2004 Umag – Singles draw". Association of Tennis Professionals (ATP).
- ^ "2004 Umag – Doubles draw". Association of Tennis Professionals (ATP).