The men's triple jump event at the 1984 Summer Olympics in Los Angeles, California had an entry list of 28 competitors, with two qualifying groups before the final (12) took place on August 4, 1984. The maximum number of athletes per nation had been set at 3 since the 1930 Olympic Congress. The top twelve and ties, and all those reaching 16.60 metres advanced to the final. The event was won by Al Joyner of the United States, the nation's first title in the men's long jump since 1904 and fourth overall. Mike Conley Sr., also an American, took silver. Keith Connor's bronze was Great Britain's first medal in the event since 1908. The Soviet boycott broke that nation's four-Games gold medal and eight-Games podium streaks.

The United States was the host nation of the 1984 Summer Olympics in Los Angeles, California. It was the nineteenth time that Team USA participated, having boycotted the 1980 Summer Olympics. 522 competitors, 339 men and 183 women, took part in 217 events in 25 sports.