1991 Volkswagen Cup – Singles

Steffi Graf successfully defended her title by defeating Jana Novotná 6–3, 6–3 in the final.

Seeds
The first four seeds received a bye into the second round. • # 🇩🇪 Steffi Graf (champion)

• # 🇪🇸 Arantxa Sánchez Vicario (semifinals)

• # Jana Novotná (final)

• # 🇧🇬 Katerina Maleeva (quarterfinals)

• # Leila Meskhi (second round)

• # 🇦🇹 Judith Wiesner (quarterfinals)

• # 🇩🇪 Anke Huber (quarterfinals)

• # 🇦🇹 Barbara Paulus (semifinals)