Puerto Rico competed at the 1984 Summer Olympics in Los Angeles, United States.

51 competitors, 43 men and 8 women, took part in 45 events in 13 sports.

[1] In the third time the nation competed in archery at the Olympics, Puerto Rico entered one man.

Men's Individual Competition Men's 200 metres Men's Marathon Men's 3,000 m Steeplechase Men's Pole Vault Women's 400 metres Women's 800 metres Women's 4×400 metres Relay Women's Marathon Women's High Jump Women's Long Jump Men's Light Flyweight (– 48 kg) Men's Flyweight (– 51 kg) Men's Bantamweight (– 54 kg) Men's Featherweight (– 57 kg) Men's Lightweight (– 60 kg) Men's Light-Welterweight (– 63.5 kg) Men's Welterweight (– 67 kg) Men's Light-Middleweight (– 71 kg) Men's Middleweight (– 75 kg) Men's Light-Heavyweight (– 81 kg) Men's Super Heavyweight (+ 91 kg) One cyclist represented Puerto Rico in 1984.

Two male fencers represented Puerto Rico in 1984 Men's Half-Middleweight Men's Middleweight Men's 100m Freestyle Men's 200m Freestyle Men's 100m Butterfly Men's 200m Butterfly Men's 4 × 100 m Freestyle Relay Men's Bantamweight Freestyle Men's Featherweight Freestyle Men's Lightweight Freestyle