Athletics at the 1972 Summer Olympics – Men's 400 metres
The men's 400 metres was an event at the 1972 Summer Olympics in Munich. The competition was held on 3, 4 and 7 September. Sixty-four athletes from 49 nations competed. The maximum number of athletes per nation had been set at 3 since the 1930 Olympic Congress. The event was won by Vince Matthews of the United States, the nation's fifth consecutive and 12th overall victory in the event (all by different men). The Americans' hopes to repeat their podium sweep of four years earlier were dashed by injury in the final. Bronze medalist Julius Sang became the first black African to win a sprint Olympic medal, earning Kenya's first medal in the event.