Thomas Brisbane, Scottish general and politician, 6th Governor of New South Wales (died 1860)

Major-General Sir Thomas Makdougall Brisbane, 1st Baronet,, was a British Army officer, colonial administrator and astronomer. He served in many important wars of the late 18th and early 19th centuries, including front-line action during the Peninsular War. Upon the recommendation of the Duke of Wellington, with whom Brisbane had served, he was appointed as Governor of New South Wales from 1821 to 1825.

The governor of New South Wales is the representative of the monarch, King Charles III, in the state of New South Wales. In an analogous way to the Governor-General of Australia at the national level, the Governors of the Australian States perform constitutional and ceremonial functions at the state level. The governor is appointed by the monarch on the advice of the Premier of New South Wales, and serves in office for an unfixed period of time—known as serving At His Majesty's pleasure—though five years is the general standard of office term. The current governor is retired judge Margaret Beazley, who succeeded David Hurley on 2 May 2019.