John Henry Campbell-Wyndham (26 July 1798 – 16 November 1868), known as John Henry Campbell until between 1843 and 1847, was a British Conservative politician. Born in Croydon, Surrey, Campbell-Wyndham was the son of John Campbell and Caroline Frances née Wyndham. In 1839, he married Urania Mary Ann Kington, daughter of Peter Kington and Lady Urania Anne née Paulet, but they had no children. He died 16 November 1868, a few days after being thrown from a horse.