The men's 110 metres hurdles event at the 1984 Summer Olympics in Los Angeles, California took place on 5 and 6 August 1984. Twenty-six athletes from 17 nations competed. The maximum number of athletes per nation had been set at 3 since the 1930 Olympic Congress. The event was won by Roger Kingdom of the United States, the nation's first championship since 1972 and 16th title in the event overall. Arto Bryggare's bronze was Finland's first medal in the men's high hurdles.