Ireland competed at the 1984 Summer Olympics in Los Angeles, It went from July 28, 1984, to August 12, 1984 United States.

42 competitors, 28 men and 13 women, took part in 35 events in 10 sports.

[1] In Ireland's third appearance in archery competition at the Olympics, the nation was represented by two women.

This included veteran Hazel Greene.

Women's Individual Competition: Men's 800 metres Men's 1,500 metres Men's 5,000 metres Men's 10,000 metres Men's Marathon Men's 3,000 m Steeplechase Men's Hammer Throw Women's 800 metres Women's 3,000 metres Women's Marathon Women's 400m Hurdles Women's Discus Throw Men's Light Flyweight (– 48 kg) Men's Bantamweight (– 54 kg) Men's K1 1000m Men's K1 500m Five cyclists represented Ireland in 1984.