Simon E. Jacobsohn (December 24, 1839 in Mitau, Kurland, Russian Empire – October 3, 1902 in Chicago, Illinois, United States) was a Latvian-American violinist. Jacobsohn was born in Latvia to a Jewish family. He was educated in Leipzig under Ferdinand Davis. In 1872 he immigrated to the United States to become concertmeister and solo violinist in the orchestra which Theodore Thomas was at that time conducting in New York City. Before going to the US, Jacobsohn had been concertmeister at Bremen, at which time he organized a string quartet which became very famous throughout Europe. His musicianship in this capacity was so highly esteemed, that for fifteen or twenty years after he moved to the US, European musical critics made favorable comparison of the Jacobsohn quartet with later quartet