2004 Idea Prokom Open – Men's singles

Men's singles
2004 Idea Prokom Open
Champion Rafael Nadal
Runner-up José Acasuso
Score6–3, 6–4

Rafael Nadal defeated José Acasuso in the final, 6–3, 6–4 to win the Singles title at the 2004 Idea Prokom Open. It was his first career title.

Guillermo Coria was the reigning champion, but did not participate.