Josiah Diston (1667–1737), of Blackwell Hall, Basinghall Street, London and Woodcote Grove, 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.
Having established a political presence at Devizes, he used his wealth to consolidate his interest, spending, it was said, £3,000 by the spring of 1708 in preparation for the general election.
In November 1708, he was on the committee for drafting a bill encouraging woollen and iron manufacturers, and in March 1709 he voted for the naturalization of the Palatines.
He was put forward to draft a bill for public registration of deeds, wills and conveyances made in Wiltshire, and voted for the impeachment of Dr Sacheverell in 1710.
In 1721 he became Deputy Governor of the Bank of England for the next three years[2] and also Receiver General of Taxes for Westminster and Middlesex.