Costa Rica competed at the 1984 Summer Olympics in Los Angeles, United States. The Costa Rican contingent comprised 30 competitors in 5 sports. They did not win any medals.
Athletics
Men's 100 metres Glen Abrahams (7th place, Heat 10) (→ did not advance)
Men's 200 metres Glen Abrahams (8th place, Heat 2) (→ did not advance)
Men's 5000 metres Orlando Mora Heat — 14:33.49 (→ did not advance)
Men's 10,000 metres Orlando Mora Heat — 30:49.43 (→ did not advance)
Men's Marathon Ronald Lanzoni — did not finish (→ no ranking)
Football
Men's team competition Preliminary Round (Group D) Costa Rica – United States 0 – 3 Costa Rica – Egypt 1 – 4 Costa Rica – Italy 1 – 0 Quarter Finals → Did not advance Team Roster: ( 1.) Marco Antonio Rojas ( 4.) César Hines ( 5.) Marvin Obando ( 6.) German Chavarria ( 7.) Juan Arnoldo Cayasso ( 8.) Carlos Santana ( 9.) Leonidas Flores (10.) Enrique Rivers (11.) Evaristo Coronado (12.) Minor Alpizar (13.) Carlos Toppings (14.) Guillermo Guardia (15.) Enrique Díaz (16.) Álvaro Solano (17.) Miguel Simpson (18.) Luis Galagarza (22.) Alejandro González
Judo
Men's extra lightweight Ronny Sanabria (=18th)
Men's half-lightweight Andrés Sancho (=32nd)
Men's lightweight Alvaro Sanabria (=19th)
Men's half-middleweight Javier Condor (=34th)
Shooting
Men's 50 metre pistol Mariano Lara (25th)
Men's 10 metre air rifle Roger Cartín (52nd)
Women's 10 metre air rifle Elizabeth Jagush (32nd)
Swimming
Event Athlete Result Men's 200 metre breaststroke Andrey Aguilar Heat 4; 2:27.69 - 29th Men's 200 metre butterfly Heat 5; 2:08.74 - 30th Men's 200 metre individual medley Heat 1; 2:11.63 - 26th
Notes
References
Official Olympic Reports