Australia is a highly developed country with a mixed economy. As of 2023, Australia was the 14th-largest national economy by nominal GDP, the 19th-largest by PPP-adjusted GDP, and was the 21st-largest goods exporter and 24th-largest goods importer. Australia took the record for the longest run of uninterrupted GDP growth in the developed world with the March 2017 financial quarter. It was the 103rd quarter and the 26th year since the country had a technical recession. As of June 2021, the country's GDP was estimated at $1.98 trillion.

The Australian continent was first settled when ancestors of Indigenous Australians arrived via the islands of Maritime Southeast Asia and New Guinea over 50,000 years ago.