William Newton (died 1453), of Swell, Somerset, was an English politician.
His first wife, Maud, died on 24 February 1419; she was the widow of Sir John Lorty.
By 1429, Newton had married again, to Idonea née Montague.
He was a Member (MP) of the Parliament of England for Dorchester in May 1413.
This article about a 15th-century member of the parliament of England is a stub.