Mark Pepys, 6th Earl of Cottenham

Mark Everard Pepys, 6th Earl of Cottenham (29 May 1903 – 19 July 1943) was an English peer, baronet, motor racing driver, member of the House of Lords, and MI5 officer.

He resigned from MI5 during the Second World War, soon after the German attack on the Soviet Union (Operation Barbarossa), as he did not support the continuation of the war against Germany.