Denis Cuthbert Capel-Dunn OBE (1903 – 4 July 1945) was a British lawyer and military bureaucrat immortalised by Anthony Powell in many aspects of the character of Kenneth Widmerpool, the anti-hero of Powell's A Dance to the Music of Time sequence of novels. Capel-Dunn served as secretary to the Joint Intelligence Committee (JIC) between 1943 and 1945.