According to The American Heritage Dictionary of the English Language, the abbreviation is "Aus."
The Abbreviation for Australia is Au
SA is the abbreviation for the state of South Australia.
The abbreviation for Brisbane, Australia is BRIS.
The abbreviation for Hobart, Australia is HOB.
The abbreviation for Tasmania is Tas.
AUT. (AUS stands for Australia.) The two letter abbreviation is AT (Australia is AU).
The abbreviation for Western Australia is WA.
SA means South Australia.
Aus or Aust.Aus Australia.If you are wanting the country abbreviation, it is AU.
The three-letter abbreviation for Australia is AUS.
AUS
Australia