Prince Christoph Ernst August of Hesse (14 May 1901 – 7 October 1943) was a nephew of Kaiser Wilhelm II. He was an SS-Oberführer in the Allgemeine SS and an officer in the Luftwaffe Reserve, killed on active duty in a plane crash during World War II. His brother-in-law, Prince Philip of Greece and Denmark, fought on the British side and married the future Queen Elizabeth II after the war.