Auburn is a Western Sydney suburb in the state of New South Wales, Australia. Auburn is located 16 kilometres (9.9 mi) west of the Sydney central business district and is in the local government area of Cumberland City Council, having previously been the administrative centre of Auburn Council. The suburb was named after Oliver Goldsmith's poem The Deserted Village, which describes 'Auburn' in England as the "loveliest village of the plain".

Greater Western Sydney (GWS) is a large region of the metropolitan area of Greater Sydney, New South Wales (NSW), Australia that generally embraces the north-west, south-west, central-west, far western and the Blue Mountains sub-regions within Sydney's metropolitan area and encompasses 11 local government areas: Blacktown, Blue Mountains, Camden, Campbelltown, Cumberland, Fairfield, Hawkesbury, Liverpool, Parramatta, Penrith and Wollondilly. It includes Western Sydney, which has a number of different definitions, although the one consistently used is the region composed of ten local government authorities, most of which are members of the Western Sydney Regional Organisation of Councils (WSROC). The NSW Government's Office of Western Sydney calls the region "Greater Western Sydney".