The 2012 Ms. Olympia contest was an IFBB professional bodybuilding competition and part of Joe Weider's Olympia Fitness & Performance Weekend 2012 was held on September 28, 2012, at the South Hall in the Las Vegas Convention Center in Winchester, Nevada and in the Orleans Arena at The Orleans Hotel and Casino in Paradise, Nevada.

It was the 33rd Ms. Olympia competition held.

Other events at the exhibition included the 212 Olympia Showdown, Mr. Olympia, Fitness Olympia, Figure Olympia, and Bikini Olympia contests.

Total: $60,000[1] Comparison to previous Olympia results: 1 In the event of a tie, the competitor with the best top five contest placings will be awarded the qualification.

If both competitors have the same contest placings, than both will qualify for the Olympia.