Dr. phil. Emil Otto Hellmuth Kieffer (9 April 1899 – 13 March 1985) was a Korvettenkapitän of the Reserves with the Kriegsmarine during World War II and a recipient of the Knight's Cross of the Iron Cross. (). The Knight's Cross of the Iron Cross was awarded to recognise extreme battlefield bravery or successful military leadership.
Dr. phil. Emil Otto Hellmuth Kieffer (9 April 1899 – 13 March 1985) was a Korvettenkapitän of the Reserves with the Kriegsmarine during World War II and a recipient of the Knight's Cross of the Iron Cross. (). The Knight's Cross of the Iron Cross was awarded to recognise extreme battlefield bravery or successful military leadership.