Hermann Osthoff

Hermann Ostoff
Born	(1847-04-18)18 April 1847 Billmerich, Kingdom of Prussia (now Unna, Germany)
Died	7 May 1909(1909-05-07) (aged 62) Heidelberg, German Empire (now Heidelberg, Germany)
Known for	Osthoff's law
Scientific career
Fields	historical linguistics, Indo-European studies

Hermann Osthoff (18 April 1847 – 7 May 1909) was a German linguist. He was involved in Indo-European studies and the Neogrammarian school. He is known for formulating Osthoff's law, and published widely on Indo-European word-formation and morphology.