2004 Ordina Open – Women's singles

Kim Clijsters was the defending champion, but did not compete in 2004.

Mary Pierce won the title in 2004.

Seeds
The top two seeds receive a bye into the second round. • # 🇷🇺 Nadia Petrova (second round)

• # Patty Schnyder (second round)

• # 🇫🇷 Mary Pierce (Winner)

• # Eleni Daniilidou (first round, withdrew due to a right achilles strain)

• # 🇫🇷 Émilie Loit (first round, withdrew due to a right foot ligament strain)

• # Jelena Kostanić (first round)

• # 🇱🇺 Claudine Schaul (quarterfinals)

• # 🇷🇺 Lina Krasnoroutskaia (semifinals)