1991 Geneva European Open – Singles

Barbara Paulus was the defending champion, but did not compete this year.

Manuela Maleeva-Fragnière won the title by defeating Helen Kelesi 6–3, 3–6, 6–3 in the final.

Seeds
The first four seeds received a bye into the second round. • # 🇪🇸 Conchita Martínez (semifinals)

• # Manuela Maleeva-Fragnière (champion)

• # (n/a)

• # 🇨🇦 Helen Kelesi (final)

• # Emanuela Zardo (second round)

• # 🇺🇸 Marianne Werdel (second round)

• # Rosalyn Fairbank-Nideffer (first round)

• # 🇧🇬 Manuela Maleeva (second round)