The men's 200 metres was a track and field athletics event held as part of the Athletics at the 1912 Summer Olympics programme. It was the fourth appearance of the event, which has appeared at every edition of the Summer Olympics since the 1900 Summer Olympics. The competition was held on July 10, 1912, and on July 11, 1912. 61 runners from 19 nations competed. NOCs could enter up to 12 athletes. The event was won by Ralph Craig of the United States, the nation's third victory in four Games. Another American, Donald Lippincott, took silver. Great Britain earned its first medal in the 200 metres with Willie Applegarth's bronze.

The United States competed at the 1912 Summer Olympics in Stockholm, Sweden. 174 competitors, took part in 68 events in 11 sports. Out of the 174 athletes who had participated, 63 won medals.