John "Johnny" Colum Crichton-Stuart, 7th Marquess of Bute (born 26 April 1958 in Rothesay, Isle of Bute) is a Scottish peer and a former Formula One racing driver who raced under the name Johnny Dumfries (pronounced DUM-freece). His only season of F1 was in 1986 for Lotus, where he scored three points to finish 13th in the championship. Dumfries' biggest win of his career was in the 1988 24 Hours of Le Mans with fellow International F3000 drivers Jan Lammers and Andy Wallace.