Hellmut Diwald (13 August 1924 – 26 May 1993) was a German historian and Professor of Medieval and Modern History at the University of Erlangen-Nuremberg from 1965 to 1985. He was originally from southern Moravia, the son of an Austrian engineer and a Czech mother, and went to school in Prague before the family relocated to Nuremberg in Bavaria in 1938. During World War II, he served in the German Army. After the war, he went on to study mechanical engineering in Nuremberg before he studied philosophy, German and history at the universities of Hamburg and Erlangen. He earned a doctorate in history in 1952 and completed his Habilitation in 1958. In 1965, he was appointed as Professor of Medieval and Modern History at the University of Erlangen-Nuremberg, where he taught until his retirement