Sir William Patrick Deane, is an Australian barrister and jurist who served as the 22nd governor-general of Australia, in office from 1996 to 2001. He was previously a Justice of the High Court of Australia from 1982 to 1995.

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.