Gustav Franz Wagner (18 July 1911 – 3 October 1980) was an Austrian member of the SS with the rank of Staff sergeant (Oberscharführer). Wagner was a deputy commander of Sobibor extermination camp in German-occupied Poland, where 200,000-250,000 Jews were murdered in the camp's gas chambers during Operation Reinhard. Due to his brutality, he was known as "The Beast" and "Wolf".