Otto Heinrich Erdmannsdörffer (11 March 1876, Heidelberg – 19 April 1955, Heidelberg) was a German mineralogist and petrographer, known for his analysis of rocks and minerals found in the Odenwald, the Black Forest and the Harz Mountains.
He studied natural sciences at the universities of Heidelberg and Strasbourg, receiving his doctorate in 1900.
For the next twelve years he worked as a research assistant at the Prussian Geological Survey, and in the meantime, obtained his habilitation in mineralogy and petrology from the University of Berlin (1908).
In 1912 he was appointed chair of mineralogy and petrology at the Technical University of Hannover, and in 1926 returned to Heidelberg,[1][2] where he succeeded Ernst Anton Wülfing as director of the mineralogical-petrographic institute.
[3] He was an editor of the journal Heidelberger Beiträge zur Mineralogie und Petrographie.