Braulio Carrillo National Park, National park in Heredia Province, Costa Rica.

Braulio Carrillo National Park is a protected area covering multiple ecological zones across Costa Rica's Caribbean region. The park encompasses lowland rainforests near sea level and transitions into cloud forests as elevation increases, creating distinct habitats stacked vertically.

The park was created by executive decree no. 8367-a on 15 April 1978, ratified by Law no. 6280 on 14 November 1978, after conservation groups pushed to protect the forest cut by the new San José–Guápiles highway and its Zurquí tunnel. It honours Braulio Carrillo Colina, head of state in 1835–1837 and 1838–1842, who opened a road across the Paso de La Palma to carry coffee to the Caribbean. Later decrees, from 1986 to 2015, enlarged it to 50,000 hectares.

The park's name honours Braulio Carrillo Colina, head of state in 1835-1837 and 1838-1842, who promoted a road through the Paso de La Palma to carry coffee to the Caribbean. In 1881 Tomás Guardia built a stone road from Paracito de Moravia to the Sucio and Hondura rivers; it fell out of use when the Atlantic railway opened in 1891.

The park is accessible via the main highway connecting San Jose to the Caribbean coast, with ranger stations providing trail information at entry points. Plan visits during drier months if possible, though the region remains green throughout the year.

The Súcio River carries suspended sediment that gives its water a mineral colour, noted in the park's sources alongside the Hondura and Patria rivers. The Barva sector also holds three crater lakes, Barva, Danta and Copey, reached on foot from the Barva ranger station.