General Sir Thomas Simson Pratt, KCB (19 July 1797 – 2 February 1879) was a British Army officer.

He served in the First Anglo-Chinese War (1839–1841), in India from 1843 to 1855 where he was deputy adjutant-general at Madras, and was commander of the British Forces in Australia from 1856 to 1861.

[4] On his return to Australia he commanded the forces in Victoria until May 1862, and was then appointed to the colonelcy of the 37th (North Hampshire) Regiment of Foot, which he held until his death.

He was promoted to Knight Commander of the Most Honourable Order of the Bath (KCB) on 16 July 1861, being publicly invested with the ribbon and badge by Sir Henry Barkly, governor of Victoria, on 15 April 1862, which was the first ceremony of the kind performed in Australia.

He died at Bath, Somerset, England, on 2 February 1879[3] after suffering a stroke during the birthday party of a fellow army general, Sam Campbell.