- a)Cabo Blanco Absolute Nature Reserve (Reserva Natural Absoluta Cabo Blanco), created by Executive Decree No. 10 of October 21, 1963.
- b)Cahuita National Park, created by Executive Decrees Nos. 1236-A of September 7, 1970 and 8489-A of April 27, 1978.
- c)Santa Rosa National Park, created by Executive Decrees numbers 1562-A of March 20, 1971, 7013-A of May 4, 1977 and 2062-A of November 13, 1980.
ch) Guayabo and Negritos Islands Biological Reserves, created by Executive Decree No. 2858-A of February 28, 1973.
- d)Corcovado National Park, created by Executive Decrees numbers 5357-A of October 24, 1975 and 1148-A of February 5, 1980.
- e)Isla de Los Pájaros Biological Reserve, created by Executive Decree No. 5963-A of April 28, 1976.
- f)Hitoy Cerere Biological Reserve, created by Executive Decree No. 8351 of April 4, 1978.
- g)Carrara Biological Reserve, created by Executive Decree No. 8491-A of April 27, 1978.
- h)Addition to Rincón de La Vieja National Park, per Executive Decree No. 8493-A of April 27, 1978.
- i)Isla del Coco National Park, established by Executive Decree number 8748-A of June 22, 1978.
- j)Addition to Guayabo National Monument, per Executive Decree number 11148-A of February 5, 1980.
- k)Palo Verde National Park, created by Executive Decree No. 12765-A of July 2, 1981.
(As amended by Article 9, numeral 65, of Budget Law No. 6831 of December 20, 1982) l) Addition to Manuel Antonio National Park, per Executive Decree No. 11148-A of February 5, 1980.
- m)Addition to Tortuguero National Park, per Executive Decree number 11148- of February 5, 1980.
- n)Barra Honda National Park, delimited by Executive Decree number 10727-A of October 5, 1979.