The Parliament of Australia is the legislative body of the federal level of government of Australia. It consists of three elements: the monarch, the Senate and the House of Representatives. It combines elements from the UK Parliament and the US Congress.

The monarchy of Australia is a key component of Australia's form of government, embodied by the Australian sovereign and head of state. The Australian monarchy is a constitutional one, modelled on the Westminster system of parliamentary government, while incorporating features unique to the constitution of Australia.