1991 Citizen Cup – Singles

Steffi Graf won the tournament for the fifth time in a row after defeating Monica Seles 7–5, 6–7(4–7), 6–3 in the final.

Seeds
The first eight seeds received a bye into the second round. • # Monica Seles (final)

• # 🇩🇪 Steffi Graf (champion)

• # 🇪🇸 Arantxa Sánchez Vicario (semifinals)

• # Jana Novotná (quarterfinals)

• # 🇧🇬 Katerina Maleeva (quarterfinals)

• # Helena Suková (quarterfinals)

• # Leila Meskhi (quarterfinals)

• # 🇦🇹 Judith Wiesner (semifinals)

• # 🇨🇦 Helen Kelesi (first round)

• # 🇩🇪 Anke Huber (third round)

• # 🇩🇪 Isabel Cueto (second round)

• # Eva Švíglerová (first round)

• # Regina Rajchrtová (third round)

• # 🇫🇷 Julie Halard (third round)

• # 🇸🇪 Catarina Lindqvist (third round)

• # 🇩🇪 Wiltrud Probst (first round)