Samuel Friedrich Nathaniel Ritter von Stein (November 3, 1818 – January 9, 1885) was a German entomologist.
The next to last, daughter Adelheid von Stein (born May 25, 1859), married Joseph Neuwirth.
Stein's scientific work focused on invertebrates, and mainly on Diptera, as well as single-celled animals.
From 1850 to 1855, he was professor of zoology and botany at the Academy of Forestry in Tharandt, Saxony, 20 km south-west of Dresden.
Though not of the same order,[citation needed] Tharandt had close connections with the French National School of Forestry, which had been established in Nancy, France, in 1825.