John Chetwynd, 2nd Viscount Chetwynd (c.1680 – 21 June 1767) was a British diplomat and politician who sat in the House of Commons between 1715 and 1747. Chetwynd was the second son of John Chetwynd of Ingestre and his wife Lucy Roane, daughter of Robert Roane of Tolhurst Farm, Surrey. In 1699 he was secretary to the Duke of Manchester at Paris until 1701. He was receiver general for the Duchy of Lancaster from 1702 to 1718. He was secretary at Turin from 1703 to 1706 when he became British envoy to Savoy until 1713.