John Michell (25 December 1724 – 29 April 1793) was an English natural philosopher and geologist whose work spanned a wide range of subjects from astronomy to geology, optics, and gravitation. He was both a theorist and an experimenter.Michell was educated at Queens' College, Cambridge and later became a Fellow of Queens'. He obtained his M.A. in 1752 and B.D. in 1761. In 1760 he was elected a Fellow of the Royal Society, in the same year as Henry Cavendish. In 1762 he was appointed Woodwardian Professor of Geology, and in 1767 he became rector of Thornhill, West Yorkshire, near Dewsbury, where he died.