2004 Idea Prokom Open – Women's singles

Anna Smashnova-Pistolesi was the defending champion, but lost in second round to Marta Domachowska.

Flavia Pennetta won the title by defeating Klára Koukalová 7–5, 3–6, 6–3 in the final.

Seeds
The first two seeds received a bye into the second round. • # 🇷🇺 Anastasia Myskina (semifinals, withdrew)

• # 🇮🇱 Anna Smashnova-Pistolesi (second round)

• # 🇷🇺 Dinara Safina (second round)

• # 🇪🇸 Anabel Medina Garrigues (first round)

• # 🇨🇿 Iveta Benešová (quarterfinals)

• # 🇪🇸 Magüi Serna (withdrew due to an injury)

• # 🇩🇪 Anca Barna (withdrew to focus on the Olympics)

• # 🇪🇸 Arantxa Parra Santonja (withdrew due to an illness)

• # 🇮🇹 Flavia Pennetta (champion)

• # 🇪🇸 Marta Marrero (quarterfinals)

• # 🇨🇿 Klára Koukalová (final)