The 2004 Idea Prokom Open was the seventh edition of the professional tennis tournament later known as the Warsaw Open. The tournament was part of the International Series of the 2004 ATP Tour and a Tier III event on the 2004 WTA Tour. It took place on outdoor clay courts in the seaside resort of Sopot, Poland from August 9 through August 15, 2004.
In the men's singles event, eighteen-year-old future world number one Rafael Nadal won his first ATP title.
Rafael Nadal defeated José Acasuso, 6–3, 6–4
František Čermák / Leoš Friedl def. Martín García / Sebastián Prieto, 2–6, 6–2, 6–3
Flavia Pennetta def. Klára Zakopalová, 7-5, 3-6, 6-3
Nuria Llagostera Vives / Marta Marrero def. Klaudia Jans / Alicja Rosolska, 6–4, 6–3