| 1991 Ms. Olympia | ||||
|---|---|---|---|---|
| Promotion | IFBB | |||
| Date | October 12–13, 1991 | |||
| Venue | Shrine Auditorium | |||
| City |  Los Angeles, California, United States | |||
| Event chronology | ||||
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The 1991 Ms. Olympia contest was an IFBB professional bodybuilding competition was held on October 12 and 13, 1991 at the Shrine Auditorium in Los Angeles, California. It was the 12th Ms. Olympia competition held.