Anavilhanas National Park (Portuguese: Parque Nacional de Anavilhanas) is a national park that encompasses a huge river archipelago in the Rio Negro in the state of Amazonas, Brazil.

[2] The park was originally created on 6 February 1981 as an integral protection unit covering 350,018 hectares (864,910 acres).

[5] The park protects the environment of the Anavilhanas river archipelago in the Rio Negro, one of the largest in the world, and its forest formations.

It supports scientific research and enhances conservation of the Amazon biome through environmental education and sustainable tourism.

[8] In 2003, the property was expanded by the addition of the Anavilhanas National Park, Amanã Sustainable Development Reserve, and Mamirauá Sustainable Development Reserve to form the Central Amazon Conservation Complex, a larger World Heritage Site.