The men's foil was a fencing event held as part of the Fencing at the 1912 Summer Olympics programme. It was the fourth appearance of the event, which had not been contested in 1908. There were 94 competitors from 15 nations, a large increase from the 9 fencers who had competed in 1904. The event was won by Nedo Nadi of Italy, the first of his two victories in the event. His countryman Pietro Speciale took silver, while Richard Verderber of Austria took bronze.

Nedo Nadi was one of the best Italian fencers of all time. He is the only fencer to win a gold medal in each of the three weapons at a single Olympic Games and won the most fencing gold medals ever at a single Games—five. Nadi won six Olympic gold medals in total.