The National Forest of Três Barras is a Federal Conservation Unit of sustainable use, managed by the Chico Mendes Institute for Biodiversity Conservation - ICMBio, in the municipality of Três Barras, Santa Catarina, Brazil.

The National Pine Institute (Instituto Nacional do Pinho), a federal agency concerned with pine trees, created in 1944 the Rio dos Pardos Forest Station, which later became the Joaquim Fiuza Ramos Forest Park in Três Barras, aiming to implement a reforestation plan, especially with Araucaria angustifolia.

Currently, it is managed by the Chico Mendes Institute for Biodiversity Conservation - (ICMBio), a federal organization created in 2007.

It is a unit of federal conservation for sustainable use in the category National Forest.

The Três Barras National Forest receives a mean of 4 thousand visitors per year, who use the Conservation Unit for research, environmental education, leisure, tourism for nature contemplation and historical heritage.