2003 Sparkassen Cup – Singles

Serena Williams was the defending champion and chose not to compete this year.

Anastasia Myskina won the title, defeating Justine Henin-Hardenne in the final 3–6, 6–3, 6–3.

Seeds
The top four seeds received a bye to the second round.

• # 🇧🇪 Kim Clijsters (semifinals)

• # 🇧🇪 Justine Henin-Hardenne (final)

• # 🇷🇺 Anastasia Myskina (champion)

• # 🇧🇬 Magdalena Maleeva (second round)

• # 🇸🇰 Daniela Hantuchová (second round)

• # 🇷🇺 Nadia Petrova (quarterfinals)

• # 🇺🇸 Meghann Shaughnessy (first round)

• # 🇮🇹 Silvia Farina Elia (second round)

Seeds
• # Maja Matevžič (first round)

• # Tina Pisnik (qualifying competition)

• # 🇻🇪 María Vento-Kabchi (qualified)

• # 🇫🇷 Marion Bartoli (qualifying competition)

• # 🇮🇹 Rita Grande (second round)

• # 🇩🇪 Marlene Weingärtner (first round)

• # 🇺🇦 Tatiana Perebiynis (first round)

• # Jelena Kostanić (qualified)

Qualifiers
• # 🇧🇪 Els Callens

• # 🇨🇿 Sandra Kleinová

• # Jelena Kostanić

• # 🇻🇪 María Vento-Kabchi