General Sir Thomas Simson Pratt, KCB (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. He was promoted to lieutenant-general on 31 May 1865, and to full general eight years later.