John Newton (; 4 August [O.S. 24 July] 1725 – 21 December 1807) was an Anglican clergyman in England and the founder of the evangelical Clapham Sect. He started as an English sailor, in the Royal Navy for a period, and later a captain of slave ships. He became ordained as an evangelical Anglican cleric, served Olney, Buckinghamshire for two decades, and also wrote hymns, known for "Amazing Grace" and "Glorious Things of Thee Are Spoken".
Newton started his career at sea at a young age, and worked on slave ships in the slave trade for several years. After experiencing a period of Christian conversion Newton eventually renounced his trade and became a prominent supporter of abolitionism, living to see Britain’s abolition of the African slave trade in 1807.