The men's track time trial cycling event at the 1948 Summer Olympics took place on 11 August and was one of six events at the 1948 Olympics. Twenty-one cyclists from 21 nations competed, with each nation limited to one competitor. The event was won by Jacques Dupont of France, the nation's first victory in the event since 1896 and third consecutive podium appearance. Pierre Nihant earned Belgium's first medal in the men's track time trial with his silver; Tommy Godwin similarly took Great Britain's first medal in the event with his bronze.