Sir Thomas McIlwraith KCMG (17 May 1835 – 17 July 1900) was for many years the dominant figure of colonial politics in Queensland. He was Premier of Queensland from 1879 to 1883, again in 1888, and for a third time in 1893. In common with most politicians of his era, McIlwraith was an influential businessman, who combined his parliamentary career with a prosperous involvement in the pastoral industry.