Hon. William Finch PC (18 January 1691 – 25 December 1766) of Charlewood, Hertfordshire, was a British diplomat and Whig politician who sat in the House of Commons from 1727 to 1761. He was considered an indolent diplomat and became an opponent of Walpole, but maintained his post in the Royal Household for over 20 years until he began to lose his senses.