Harry Stein (born January 20, 1905 in Bytom, than East Prussia; date of death unknown, before 1948) was a German amateur boxing champion in 1922 and 1923 in the flyweight(- 51 kg) and featherweight divisions, who won the BDB German Flyweight Championship in 1925, and the VDF German Featherweight Championship in 1932.
He was forced to flee Germany for Prague, Poland in 1933 to escape Nazi persecution, eventually fleeing to Moscow after Germany's occupation of Poland in 1939.