Sir Kenneth MacMillan (11 December 1929 – 29 October 1992) was a British ballet dancer and choreographer who was artistic director of the Royal Ballet in London between 1970 and 1977, and its principal choreographer from 1977 until his death. Earlier he had served as director of ballet for the Deutsche Oper in Berlin. He was also associate director of the American Ballet Theatre from 1984 to 1989, and artistic associate of the Houston Ballet from 1989 to 1992.