The western pebble-mound mouse is a species of rodent in the family Muridae. It is native to and found only in Australia, where it lives in pebbly soils in arid tussock grassland and acacia woodland. According to the 2008 IUCN Red List of Threatened Species, the species is restricted to the non-coastal, central and eastern parts of the Pilbara, Western Australia. It was formerly more widespread.