1981-12-07: President Type of 1943

1981-11-19: For the City of Children (1981)

1981-10-16: World Food Day

1981-09-09: International Year of the Disabled

1981-08-24: National Archives Centenary

1981-07-10: Workers Bank

1981-06-26: Alajuela Province

1981-06-08: Consecration of Bernardo Augusto Thiel as Bishop of San Jose

1981-05-18: 13th World Telecommunications Day

1981-05-18: World Telecommunications Day

1981-05-06: Heinrich von Stephan (1831-1897), 150th Birth Anniversary

1981-04-08: Anniv. Faculty of Medicine and University of Costa Rica

1981-01-28: Cornea bank

1981-01-02: Birth centenary of J. Garcia Monge