Anthony Frederick Blunt (26 September 1907 – 26 March 1983), styled Sir Anthony Blunt KCVO from 1956 to November 1979, was a leading British art historian and Soviet spy. Blunt was professor of art history at the University of London, director of the Courtauld Institute of Art, and Surveyor of the Queen's Pictures. His 1967 monograph on the French Baroque painter Nicolas Poussin is still widely regarded as a watershed book in art history. His teaching text and reference work Art and Architecture in France 1500–1700, first published in 1953, reached its fifth edition in a slightly revised version by Richard Beresford in 1999, when it was still considered the best account of the subject.