Hermann Schmitz was a German entomologist who specialised in Hymenoptera and Diptera.
His personal collection of data on flies and the literature of flies were looted by the Nazis during World War II. He was a Jesuit of German origin living in Limburg, at the time.
Schmitz was a priest in Valkenburg. He is best known for his studies of Phoridae. His collections are in Natuurhistorisch Museum Maastricht Museum Alexander Koenig in Bonn
He wrote Phoridae In: E. Lindner, Editor, Die Fliegen der palaearktischen Region 4 and many scientific papers mostly on this family.