Mirima National Park also commonly known as Hidden Valley National Park is a National Park in far northern Western Australia located at the eastern side of the Kimberley region.

It is located approximately 2,220 kilometres (1,379 mi) from Perth just outside the township of Kununurra.

The area is of great significance to the local indigenous peoples, the Miriuwung, and several examples of rock art can be found within the park.

[3] "Mirima" is the name given by the Miriwoong people to the area extending some 150 kilometres to the north and south, and 170 kilometres to the east and west from Kununurra.

Facilities include toilets, tables, information shelters and three walk trails around the park.