2004 Porsche Tennis Grand Prix – Singles

Lindsay Davenport won the singles tennis title at the 2004 Stuttgart Open after World No. 1 Amélie Mauresmo retired due to injury, with the scoreline at 6–2, ret.

Kim Clijsters was the two-time reigning champion, but did not compete this year due to a left wrist injury.

Seeds
The top four seeds received a bye into the second round. • # 🇫🇷 Amélie Mauresmo (final, retired due to a left adductor strain)

• # 🇺🇸 Lindsay Davenport (champion)

• # 🇷🇺 Anastasia Myskina (semifinals)

• # 🇷🇺 Svetlana Kuznetsova (semifinals)

• # 🇷🇺 Elena Dementieva (first round)

• # 🇷🇺 Vera Zvonareva (first round)

• # 🇷🇺 Nadia Petrova (first round)

• # 🇯🇵 Ai Sugiyama (first round)