See main article: 1991 Porsche Tennis Grand Prix.
Mary Joe Fernández and Zina Garrison were the defending champions, but lost in the first round to Eva Pfaff and Claudia Porwik.
Martina Navratilova and Jana Novotná won the title by defeating Pam Shriver and Natasha Zvereva 6–2, 5–7, 6–4 in the final.[1]