The governor-general of Australia is the representative of the monarch of Australia, currently King Charles III, and performs many constitutional, ceremonial and community roles in the Australian political system. When performing these roles, the governor-general acts independently and is not the King's delegate or agent. The current governor-general is David Hurley, having been appointed on 1 July 2019. Samantha Mostyn has been chosen by Prime Minister Anthony Albanese to be the next governor-general, beginning 1 July 2024.

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.