Eight Mile Creek is a locality in the Australian state of South Australia located on the state’s south-east coast overlooking the body of water known in Australia as the Southern Ocean and by international authorities as the Great Australian Bight. It is about 399 kilometres (248 mi) south-east of the state capital of Adelaide and about 24 kilometres (15 mi) south of the municipal seat of Mount Gambier in the south-east of the state.
Boundaries were created in 1996 for the “long established name” which is derived from the watercourse located within its extent.
The majority land use within the locality is agriculture with a strip of land along the coastline being zoned for both residential use and conservation purposes. The locality also includes the protected area known as Ewens Ponds Conservation Park which contains the system of natural water bodies known as Ewens Ponds.
Eight Mile Creek is located within the federal division of Barker, the state electoral district of Mount Gambier and the local government area of the District Council of Grant.