Georg-Hermann Greiner (2 January 1920 – 26 September 2014) was a Luftwaffe night fighter ace who served during World War II. Greiner was recipient of the Knight's Cross of the Iron Cross with Oak Leaves—the fourth highest German award by war's end. He was also a squadron commander in the prestigious Nachtjagdgeschwader 1 (NJG 1—Night Fighter Wing 1), the most successful night fighter interceptor unit of any nation in the history of aerial warfare.