Erwin Clausen (5 August 1911 – 4 October 1943) was a German Luftwaffe military aviator during World War II, a fighter ace credited with 132 aerial victories—that is, 132 aerial combat encounters resulting in the destruction of the enemy aircraft—claimed in 561 combat missions. In June 1943, Clausen was appointed Gruppenkommandeur (group commander) of I. Gruppe of Jagdgeschwader 11 (JG 11—11th Fighter Wing), tasked with defense of the Reich missions. He was posted as missing in action after aerial combat over the North Sea on 4 October 1943. He was promoted to Major (major) posthumously.