Mamungari Conservation Park (formerly known as Unnamed National Park, Unnamed Conservation Park and also known as the Unnamed Biosphere Reserve) is a protected area located in South Australia within the southern Great Victoria Desert and northern Nullarbor Plain about 200 kilometres (120 miles) west of Maralinga and 450 kilometres (280 miles) northwest of Ceduna.

[4] In May 2004, following the passage of special legislation, SA Premier Mike Rann fulfilled a pledge he had made to Maralinga leader Archie Barton as Aboriginal Affairs Minister in 1991, by handing back title to 21,000 square kilometres (8,100 sq mi) of land to the Maralinga Tjarutja and Pila Nguru people, including the conservation park and the Serpentine Lakes.

[6][7] The conservation park is classified as an IUCN Category Ia protected area.

[8] The conservation park is managed jointly by the traditional owners, the Maralinga Tjarutja and Pila Nguru people, and the Department for Environment and Water.

The only road of significance that passes through the conservation park is the Anne Beadell Highway.