Mr. Universe is a bodybuilding competition that was started in the late 1940s and has both an amateur and professional competition. The Mr. Universe results are determined by the National Amateur Bodybuilders Association (NABBA), and competitors are judged on the symmetry of their muscles and their condition. Additional titles have been added for women bodybuilders and include Miss Physique and Miss Figure. Mr. Universe winners were able to go on to compete in the Mr. Olympia competition and many Mr. Universe winners also became Mr. Olympia winners.

World Gym also counts several Mr. Universe winners among its alumni, including Arnold Schwarzenegger, and Frank Zane.