1991 Puerto Rico Open – Doubles

Elena Brioukhovets and Natalia Medvedeva were the defending champions, but they did not compete this year.

Rika Hiraki and Florencia Labat won the title by defeating Sabine Appelmans and Camille Benjamin 6–3, 6–3 in the final.

Seeds
• # 🇧🇪 Sabine Appelmans / 🇺🇸 Camille Benjamin (final)

• # 🇺🇸 Shannan McCarthy / 🇫🇷 Mary Pierce (quarterfinals)

• # 🇺🇸 Carrie Cunningham / 🇺🇸 Ann Grossman (semifinals)

• # 🇨🇦 Rene Alter / 🇺🇸 Shaun Stafford (quarterfinals)