Hans Ritter von Hemmer, (26 June 1869 – 15 December 1931), son of Colonel , was an officer in the Royal Bavarian Army and Knight Commander of the Military Order of Max Joseph. He was born in Munich, Kingdom of Bavaria and attended school at the humanistic Gymnasium in Regensburg, then joined on 12 August 1888 the 11th Bavarian Infantry Regiment (not the same as the 11th Bavarian Infantry Division of World War I). In 1896 he was sent for 3 years training at the Bavarian war academy, followed in 1900 by two years at the , another and from 1909 he worked at the Prussian General Staff in Berlin. Then, from 19 September 1912 he was at the Bavarian Army General Staff.