Karl-Gustav Sauberzweig (1 September 1899 – 20 October 1946) was a German Army Oberst (Colonel) who transferred to the Waffen-SS during World War II and commanded the 13th Waffen Mountain Division of the SS Handschar (1st Croatian) in 1943–1944, and the IX Waffen Mountain Corps of the SS (Croatian) in 1944–1945, reaching the rank of Gruppenführer and Generalleutnant of the Waffen SS. He returned to the Wehrmacht in January 1945 and was appointed as a Generalleutnant to command a corps within Army Group H in northern Germany. Sauberzweig was a bespectacled Prussian career army officer who had earned an Iron Cross I Class and commanded an infantry company in his late teens during World War I. He was fluent in Spanish and worked in signals in the Wehrmacht during the interwar period.