The men's 800 metres event at the 1948 Olympic Games took place July 30, July 31 and August 2. Forty-one athletes from 24 nations competed. The maximum number of athletes per nation had been set at 3 since the 1930 Olympic Congress. The final was won by the American Mal Whitfield. It was the first of Whitfield's two wins in the event, the second of four consecutive American victories, and the fifth overall United States win in the 800 metres. Arthur Wint earned Jamaica's first Olympic medal in any event with silver; he would take gold in the 400 metres a few days later. Marcel Hansenne took France's first 800 metres medal with bronze.