National park (Brazil) in the context of Alto Cariri National Park

Lençóis Maranhenses National Park (Parque Nacional dos Lençóis Maranhenses) is a national park in Maranhão state in northeastern Brazil, just east of the Baía de São José. Protected on June 2, 1981, the 155,000 ha (380,000-acre) park includes 70 km (43 mi) of coastline, and an interior composed of rolling sand dunes. During the rainy season, the valleys among the dunes fill with freshwater lagoons, prevented from draining by the impermeable rock beneath. The park is home to a range of species, including four listed as endangered, and has become a popular destination for ecotourists.

In July 2024 the site was declared a UNESCO World Heritage Site for its exceptional beauty and the fact that it is a unique natural aspect in the world.

Iguaçu National Park (Portuguese: Parque Nacional do Iguaçu, pronounced [ˈpaʁki nasi.oˈnaw du iɡwaˈsu, - nasjoˈnaw -]) is a national park in Paraná State, Brazil. It comprises a total area of 185,262.5 hectares (457,794 acres) and a length of about 420 kilometers (260 mi), 300 kilometers (190 mi) of which are natural borders by bodies of water and the Argentine and Brazilian sides together comprise around 260,000 hectares (640,000 acres). Iguaçu National Park was created by federal decree nr. 1035 of 10 January 1939 and became a UNESCO World Heritage Site in 1986. The park is managed by Chico Mendes Institute for Biodiversity Conservation (ICMBio).

The park shares a border with Iguazú National Park in Argentina. It also has one of the world's largest waterfalls, extending over some 2,700 meters (8,900 ft). It is home to many rare and endangered species of flora and fauna, among them the giant otter and the giant anteater. The clouds of spray produced by the waterfall are conducive to the growth of lush vegetation.

The Xingu Indigenous Park (Parque Indígena do Xingu, pronounced [ʃiŋˈɡu]) is an indigenous territory of Brazil, first created in 1961 as a national park in the state of Mato Grosso, Brazil. Its official purposes are to protect the environment and the several nations of Xingu Indigenous peoples in the area.

Serra dos Órgãos National Park (Portuguese: Parque Nacional da Serra dos Órgãos: "Organs Range") is a national park in the state of Rio de Janeiro, Brazil. It protects the Serra dos Órgãos mountain range and the water sources in the range. It was the third national park to be created in Brazil.

The Chapada dos Guimarães National Park (Portuguese: Parque Nacional da Chapada dos Guimarães) is a national park in the state of Mato Grosso, Brazil.It is a region of rugged terrain with dramatic cliffs and waterfalls, and contains the geographical centre of the continent.

The Araguaia National Park (Parque Nacional do Araguaia) is a national park located in Tocantins state in the north of Brazil, between 09º51’—11º11’S and 49º57’—50º27’W. Bananal Island, on which the park is located, is believed to be the largest inland river island in the world.