A national forest in Brazil is a type of sustainable use protected area. The primary purpose is sustainable exploitation of the forest, subject to various limits. These include a requirement to preserve at least 50% of the original forest, to preserve forest along watercourses and on steep slopes, and so on. More than 10% of the Amazon rainforest is protected by national forests or other types of conservation unit.

Protected areas of Brazil included various classes of area according to the National System of Nature Conservation Units (SNUC), a formal, unified system for federal, state and municipal parks created in 2000.