Hallam Tennyson, 2nd Baron Tennyson, was a British aristocrat who served as the second governor-general of Australia, in office from 1903 to 1904. He was previously Governor of South Australia from 1899 to 1902.

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.