Nullarbor is a locality in the Australian state of South Australia located 295 kilometres (183 mi) to the west of the town of Ceduna in the western part of the state immediately adjoining the border with Western Australia.

[1] Nullarbor is bounded in the west by the Western Australia - South Australian state border, in the south by the coastline adjoining the Great Australian Bight, to the east by the localities of Yalata and Yellabinna and to the north by the Trans-Australian Railway.

Uses included tourism and research associated with the locality's natural features, mineral exploration in the Regional Reserve, and use by indigenous communities for purposes such as cultural activities.

[13][14] The Eyre Highway is the major road passing through the locality to Western Australia.

[15][16] Nullarbor is located within the federal Division of Grey, the state electoral districts of Flinders and Giles, and the Pastoral Unincorporated Area of South Australia where municipal services are provided to communities such as Border Village by a South Australian government agency, the Outback Communities Authority.