Samuil Osipovich Shatunovsky (Russian: Самуил Осипович Шатуновский; 25 March 1859 – 27 March 1929) was a Russian and Soviet mathematician. He was born in Velikaia Znamenka, in a poor Jewish family as the 9th child. He completed secondary education in Kherson, then studied for a year in Rostov and moved to Saint Petersburg seeking a university degree. There he studied in several technical universities. Engineering however did not attract Shatunovsky and he dedicated himself to mathematics, voluntarily attending lectures by Pafnuty Chebyshev. Shatunovsky could not complete any university program