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The 1973 Mr. Olympia contest was an IFBB professional bodybuilding competition held on September 8, 1973 at the Brooklyn Academy of Music in Brooklyn, New York. It was the 9th Mr. Olympia competition held.
- Sergio Oliva was originally slated to compete at the event, but was barred from competing by the IFBB for appearing in the 1972 WBBG Mr. Galaxy contest which was not an IFBB certified event