The Jaú National Park ("Parque Nacional do Jaú" in Portuguese) is located in the Amazonas state in Brazil, between 1º00’ - 3º00’S and 61º30’ - 64º00’W.
It is the largest forest reserve in South America, covering an area greater than 5.6 million acres (23,000 km²). Entry into the park is restricted; express permission from the Brazilian government is required to enter the reserve.
The park is known as a good example of tropical rainforest conservation in the Amazon. It houses Jaguars, Amazonian Manatees, Amazon river dolphins, and numerous other species of animals and plants.