Dudley West is a locality in the Australian state of South Australia located on the south coast of Dudley Peninsula on Kangaroo Island overlooking the body of water known in Australia as the Southern Ocean and by international authorities as the Great Australian Bight. It is located about 107 kilometres (66 mi) south of the Adelaide city centre and about 11 kilometres (6.8 mi) south-west of Penneshaw.
Its boundaries were created in March 2002 for the “long established name.” The locality is reported as being so named because it is located in the western part of the cadastral unit of the Hundred of Dudley.
The land use within the locality is divided between agriculture and conservation with the latter land use being concerned with both the protected area, the Dudley Conservation Park, and land being subject to native vegetation heritage agreements.
Dudley West is located within the federal division of Mayo, the state electoral district of Finniss and the local government area of the Kangaroo Island Council.