The men's 110m Hurdles was an event at the 1956 Summer Olympics in Melbourne, Australia. There were 24 athletes from 15 nations. The event took place on 27 and 28 November 1956. The maximum number of athletes per nation had been set at 3 since the 1930 Olympic Congress. The event was won by Lee Calhoun of the United States. It was the fifth of nine consecutive American victories, and the 11th overall gold medal for the United States in the 110 metres hurdles. It was also the third of four consecutive American podium sweeps, and the seventh overall sweep by the United States in the event.