The men's 90 kg weightlifting competitions at the 1952 Summer Olympics in Helsinki took place on 27 July at Messuhalli. It was the first appearance of the middle heavyweight class (or, as it was listed in the 1952 Official Report, the "heavy lightweight" class). Previously all weightlifters above the light heavyweight (82.5 kg) class competed together in the heavyweight class; this new middle heavyweight class featured weightlifters between 82.5 kg and 90 kg.