John Charles Compton Cavendish, 5th Baron Chesham, PC (18 June 1916 – 23 December 1989), was a British Conservative politician. A member of the Cavendish family headed by the Duke of Devonshire he was the son of John Compton Cavendish, 4th Baron Chesham and his first wife, Margot Mills. A motoring enthusiast, Chesham first started motorcycling when he attended Cambridge University, riding Rex-Acme, AJS, Rudge and competing on an Excelsior at Brooklands. He joined the Royal Automobile Club as Executive Vice-Chairman from April, 1966, then a newly created salaried position, until 1970.