Sir John Norton, 3rd Baronet (1620 – 9 January 1687) was an English politician who sat in the House of Commons between 1661 and 1687. He supported the Royalist cause in the English Civil War. Norton was the son of Sir Richard Norton, 1st Baronet and his wife Amy Bilson, daughter of Thomas Bilson, Bishop of Winchester. He matriculated at Corpus Christi, Oxford on 23 June 1637, aged 17. He was admitted to Middle Temple in 1641. During the CIvil War, he and his father supported the King and suffered accordingly. He succeeded to the baronetcy on the death of his brother in 1652.