Sir John Robert Kerr, was an Australian barrister and judge who served as the 18th governor-general of Australia, in office from 1974 to 1977. He is primarily known for his involvement in the 1975 constitutional crisis, which culminated in his decision to dismiss the incumbent prime minister Gough Whitlam and appoint Malcolm Fraser as his replacement, which led to unprecedented actions in Australian federal politics.

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.