Lebanon competed at the 1984 Summer Olympics in Los Angeles, United States. 22 competitors, 21 men and 1 woman, took part in 20 events in 9 sports.
Athletics
Men's Long Jump
Ghabi Issa Khouri
Qualification — 6.80m (→ did not advance, 27th place)
Boxing
Cycling
One cyclist represented Lebanon in 1984.
Individual road race
Sirop Arslanian — did not finish (→ no ranking)
Fencing
Four fencers, all men, represented Lebanon in 1984.
Men's foil
Henri Darricau
Dany Haddad
Yves Daniel Darricau
Men's team foil
Henri Darricau, Yves Daniel Darricau, Dany Haddad, Michel Youssef
Judo
Shooting
Swimming
Men's 100m Freestyle
Percy Sayegh
Heat — 1:01.88 (→ did not advance, 66th place)
Rami Kantari
Heat — 1:01.96 (→ did not advance, 67th place)
Men's 200m Freestyle
Percy Sayegh
Heat — 2:20.76 (→ did not advance, 55th place)
Rami Kantari
Heat — 2:25.43 (→ did not advance, 56th place)
Men's 100m Backstroke
Ibrahim El-Baba
Heat — 1:13.76 (→ did not advance, 44th place)
Rami Kantari
Heat — DSQ (→ did not advance, no ranking)
Men's 100m Breaststroke
Amine El-Domyati
Heat — 1:19.10 (→ did not advance, 50th place)
Men's 200m Breaststroke
Amine El-Domyati
Heat — DNS (→ did not advance, no ranking)
Men's 100m Butterfly
Ibrahim El-Baba
Heat — 1:04.48 (→ did not advance, 46th place)