Friedrich "Frieder" Rupp (26 November 1917 – 15 May 1943) was a German Luftwaffe ace and recipient of the Knight's Cross of the Iron Cross during World War II. The Knight's Cross of the Iron Cross was awarded to recognise extreme battlefield bravery or successful military leadership. Friedrich Rupp was shot down on 15 May 1943 over the North Sea, he was posthumously promoted to Oberleutnant. During his career he was credited with 52 victories, 50 over the Eastern Front and 2 over the Western Front.