Mainland Australia is a term used to describe the main land mass of the Commonwealth of Australia excluding Tasmania and other offshore islands and external territories (such as Australian Antarctic Territory). The land mass also constitutes the mainland of the Australian continent, and the term, along with continental Australia, can be used in a geographic context to exclude surrounding continental islands.
The term is typically used when referring to the relationship between Tasmania and the other Australian states, in that people not from Tasmania are referred to as mainlanders. Tasmania has been omitted on a number of occasions from maps of Australia, reinforcing the divide between Tasmania and the mainland. The 1982 Commonwealth Games in Brisbane left Tasmania off the map of Australia during the opening ceremony, as did the designs of the Australian Swim Team uniform for the 2014 Commonwealth Games.