John Vaughan, 1st Earl of Carbery (1574 or 1575 – 6 May 1634) was a Welsh courtier and politician who sat in the House of Commons in 1601 and from 1621 to 1622. He served Robert Devereux, 2nd Earl of Essex, and later Prince Charles, heir to the throne of King James I. However, his career ended when the Prince acceded to the throne in 1625, and he later estimated that serving the Prince had cost him £20,000, which went unrecompensed.