Josiah Diston (1667–1737), of Blackwell Hall, Basinghall Street, London and , Epsom, Surrey, was an English cloth factor, banker and Whig politician who sat in the English House of Commons from 1705 to 1707 and in the British House of Commons between 1707 and 1722. From about 1713 Diston began buying up land at Epsom, where he built a house, Mount Diston (now Woodcote Grove), where he lived for approximately 15 years. Diston died at Hampstead on 7 November 1737.