Quidditch came to Australia some time in the eighteenth century and is very popular, not least because of the large areas of uninhabited outback where Quidditch can be played without Muggle notice. Australian teams are known for both speed and showmanship (QA8).
The Australians were the winners of the 1966 Quidditch World Cup (QWC).
The star Chaser from the 1966 Quidditch World Cup, Royston Idlewind, later served as the International Director of the ICWQC from 1971 to 1974 (QWC). It was a decision he may have come to regret after the tumult that took place during the 1974 tournament.
Although Australia was a participant in Quidditch World Cup tournaments, there are not any Quidditch or other wizarding sports listed on its Wikipedia page (Wikipedia).
Lexicon timeline of Quidditch
Lexicon list of World Quidditch teams
From the Web
Writing by J K Rowling on WizardingWorld.com (Pottermore): The Daily Prophet
Writing by J K Rowling on Imgur (Daily Prophet coverage of the 2014 Quidditch World Cup, originally from Pottermore):
- History of the Quidditch World Cup
- Quidditch World Cup 1990-2014
- Match reports and articles from the 2014 Quidditch World Cup
WizardingWorld.com (Pottermore) feature: Quidditch Through the Ages
Harry Potter Wiki: Australian National Quidditch Team