Vaguely Noble (1965–1989) was an Irish-bred Thoroughbred racehorse who competed in the United Kingdom and France. The colt is best known as the winner of the 1968 Group One Prix de l'Arc de Triomphe when he defeated the best horses from England, France, Ireland and Italy. He was later a leading sire in Great Britain & Ireland and a Leading broodmare sire in GB & Ireland. Vaguely Noble is one of the highest-rated horses ever to run in Europe.