1991 OTB International Open – Women's singles

Anke Huber was the defending champion, but lost in the quarterfinals to Alexia Dechaume.

Brenda Schultz won the title by defeating Dechaume 7–6(7–5), 6–2 in the final.

Seeds
• # 🇩🇪 Anke Huber (quarterfinals)

• # 🇫🇷 Julie Halard (second round)

• # 🇺🇸 Marianne Werdel (semifinals)

• # 🇦🇺 Rachel McQuillan (quarterfinals)

• # 🇯🇵 Naoko Sawamatsu (quarterfinals)

• # Manon Bollegraf (second round)

• # Brenda Schultz (champion)

• # Elena Brioukhovets (first round)