The Carajás National Forest is a national forest in the state of Pará, Brazil. It covers the Serra dos Carajás, an area with large deposits of iron ore, and attempts to combine the roles of supporting mineral extraction with preserving the environment and maintaining biodiversity.

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.