Cedric Bassett Popkin (20 June 1890 – 26 January 1968) was an Australian soldier considered most likely to have killed "The Red Baron" according to original research and forensics done by Dr M Geoffrey Miller “The death of Baron Manfred Richthofen: Who fired the fatal shot?” in 1998 (Journal and Proceedings of Military History Society of Australia). Popkin was an anti-aircraft (AA) machine gunner with the First Australian Imperial Force (AIF) during the First World War.