2003 Porsche Tennis Grand Prix – Singles

Kim Clijsters was the defending champion, and successfully defended her title by defeating compatriot Justine Henin-Hardenne 5–7, 6–4, 6–2 in the final.

Seeds
The first four seeds received a bye into the second round. • # 🇧🇪 Kim Clijsters (champion)

• # 🇧🇪 Justine Henin-Hardenne (final)

• # 🇺🇸 Lindsay Davenport (quarterfinals)

• # 🇺🇸 Jennifer Capriati (second round)

• # 🇫🇷 Amélie Mauresmo (quarterfinals)

• # 🇷🇺 Elena Dementieva (quarterfinals)

• # 🇺🇸 Chanda Rubin (second round)

• # 🇷🇺 Anastasia Myskina (second round)