Reinhard Seiler (30 August 1909 – 6 October 1989) was a Spanish Civil War and World War II Luftwaffe Major and ace, commander of Jagdgeschwader 104 and a winner of the Knight's Cross of the Iron Cross with Oak Leaves of Nazi Germany; for the fighter pilots, it was a quantifiable measure of skill and combat success.
Reinhard Seiler was credited with 159 victories during World War II, over the course of about 500 combat missions.
He recorded an additional 9 victories during the Spanish Civil War.