The men's coxed four competition at the 1948 Summer Olympics in London took place at Henley-on-Thames, London. It was held from 5 to 9 August. There were 16 boats (80 competitors) from 16 nations, with each nation limited to a single boat in the event. The event was won by the United States, the nation's first victory in the men's coxed four. Switzerland earned silver, the nation's fifth medal in the event in six Games (having missed the podium only in 1932, when no Swiss team competed). Denmark took its first medal in the men's coxed four since 1912, with bronze.