Samuel Friedrich Stein

Samuel Friedrich Nathaniel Ritter von Stein (November 3, 1818 – January 9, 1885) was a German zoologist who worked in the field of protozoology and entomology. He was Professor at the Royal Saxon Academy of Forestry in Tharandt from 1850–55; and Professor, and later Rector, at the Charles University in Prague, from 1855–76. His scientific work focused mainly on the ciliates (then called infusoria) and he later contributed to studies on some arthropods.