Thomas Garrett (16 July 1830 – 25 November 1891) was a member of the New South Wales Legislative Assembly, newspaper proprietor and land agent.

The youth was soon sent back, and having finished his apprenticeship, he was engaged on a number of newspapers, subsequently being employed in the Government printing office, where he worked for three years.

[3] In 1860 Thomas joined his father in Parliament, sitting for the Monaro constituency, acknowledged as the lieutenant of John Robertson.

In 1964 he moved to his father's old seat of Shoalhaven which had been vacated by Robertson, and he sat as member until 1871, when he resigned due to financial pressures to accept an appointment as a police magistrate at Berrima.

Garrett was accused of bribery in relation to positions within the Department of Lands, and insobriety affecting his capacity to fulfill his responsibilities as minister.