Oberst Dr. jur. Ernst Kupfer (born 2 July 1907 in Coburg – killed in aircraft accident on 6 November 1943, north of Thessaloniki in the Kerkini mountain range) was a German World War II Luftwaffe Stuka ace. He was also a recipient of the Knight's Cross of the Iron Cross with Oak Leaves and Swords (). The Knight's Cross of the Iron Cross and its higher grade Oak Leaves and Swords was awarded to recognise extreme battlefield bravery or successful military leadership.