Sir Thomas Watson, 1st Baronet, (1792 – 11 December 1882) was a British physician who is primarily known for describing the water hammer pulse found in aortic regurgitation in 1844. He was President of the Royal College of Physicians from 1862 to 1866. He was born in 1792, the son of Joseph Watson, in Kentisbeare, near Honiton, East Devon, and educated at Bury St Edmunds Grammar School. He entered St John's College, Cambridge, graduating in 1815. He was elected a fellow of the Royal College of Physicians in 1826 and delivered the Gulstonian Lecture in 1827 and the Lumleian lecture in 1831.