William Campion (6 February 1640 – 20 September 1702) was an English politician who sat in the House of Commons between 1689 and 1702. Campion was the son of Sir William Campion of Combwell, and his wife Grace Parker, daughter of Sir Thomas Parker of Ratton Sussex. He was educated at Trinity College, Cambridge, and admitted to Middle Temple in 1657. Campion died aged 62 and was buried at St. Mary's church in Goudhurst.