- 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.