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 (28 jumpers) before the final (12) took place on August 4, 1984.

[1] 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.

The Soviet boycott broke that nation's four-Games gold medal and eight-Games podium streaks.

The only returning finalists from the 1980 Games were fourth-place finisher Keith Connor of Great Britain and eighth-place finisher Ken Lorraway of Australia; the Soviet jumpers were not present due to the boycott while the two men who felt they had been wronged by Soviet judging in 1980, João Carlos de Oliveira and Ian Campbell, had both suffered career-ending injuries shortly after the Moscow Games.

[2][3] Cameroon, the People's Republic of China, Mali, Paraguay, and Togo each made their first appearance in the event.