Sir Thomas Vyner, 1st Baronet was an English merchant and politician who served as the Lord Mayor of London in 1653. Vyner supplied gold bullion to two English kings and to the Protectorate of Oliver Cromwell. Born at North Cerney, Gloucestershire, on 15 December 1588, Vyner was the son of Thomas and Anne Vyner. After his father's death in 1600, Vyner was sent to London to live with his sister and brother-in-law, Samuel Moore.