Sir Charles Hanbury Williams, KB (8 December 1708 – 2 November 1759) was a British politician, diplomat and writer.

Williams entered Parliament in 1734, representing the Monmouthshire constituency as a supporter of Robert Walpole, and held the seat until 1747.

When the future King of Poland, Stanisław Poniatowski, was receiving medical treatment in Berlin, Sir Charles met him when sent there as Ambassador (1750–1751).

Hanbury Williams became known as one of the prominent wits about town, and following in the tradition of Alexander Pope (1688-1744) he wrote a great deal of satirical light verse, including Isabella, or the Morning (1740), satires on Ruth Darlington and Pulleney (1741–1742), The Country Girl (1742), Lessons for the Day (1742), and Letter to Mr Dodsley (1743).

[4] Together, they had two daughters: Charles Hanbury Williams died insane in 1759 and the Coldbrook estate passed to his brother George.

[5] Through his second daughter Charlotte, he was grandfather to Richard Boyle-Walsingham (1762–1788), who died unmarried, and Charlotte Boyle-Walsingham, later suo jure Baroness de Ros, who married Lord Henry FitzGerald, fourth son of James FitzGerald, 1st Duke of Leinster and Lady Emily Lennox, Duchess of Leinster.