Hanns-Joachim Gottlob Scharff (December 16, 1907 – September 10, 1992) was a German Luftwaffe interrogator during the Second World War. He has been called the "Master Interrogator" of the Luftwaffe and possibly all of Nazi Germany; he has also been praised for his contribution in shaping U.S. interrogation techniques after the war. A mere Obergefreiter (the equivalent of a senior lance corporal), he was charged with interrogating German-captured American fighter pilots during the war after he became an interrogation officer in 1943. He has been highly praised for the success of his techniques, in particular because he never used physical means to obtain the required information. Scharff’s interrogation techniques were so effective that he was occasionally called upon to assist other German