Sir Cosmo Edmund Duff Gordon, 5th Baronet DL (July 22nd, 1862 – April 20th, 1931), the son of the Hon. Cosmo Lewis Duff Gordon and the former Anna Maria Antrobus, was a prominent Scottish landowner and sportsman. He was particularly noted as a fencer, representing Great Britain at the 1906 Summer Olympics, winning silver in the team épée event. He was also a self-defence enthusiast who trained with champion Swiss wrestler Armand Cherpillod at the Bartitsu Club in London's Soho district. Duff Gordon was the co-founder of the London Fencing League, a member of the Bath Club and the Royal Automobile Club. He was a sheriff and magistrate in his native Kincardineshire, near Aberdeen, where his ancestral country estate Maryculter was located.