Reverend Dr. John Hewett (or Huett; September 1614 – buried 8 June 1658) was chaplain to Charles I and later executed for treason as a Royalist. The son of clothworker Thomas Hewett, he was born in Eccles, Lancashire, and educated in nearby Bolton-le-Moors. He matriculated sizar at Pembroke College, Cambridge in 1633, and in 1643 he was awarded a degree of D.D. by Oxford University, where he served as a chaplain to Charles I. He then became chaplain to Montagu Bertie, 2nd Earl of Lindsey, at Havering in Essex, before moving to London, where he preached to larger congregations. He was openly loyal to the exiled Prince Charles (the future King Charles II), and was involved in the secret preparations for his return.