Lev Matveyevich Vainshtein (also "Vaynshteyn" and "Lew Weinstein"; 12 March 1916 – 25 December 2004) was a Soviet world champion and Olympic bronze medalist in shooting.

[1][2][3] Weinstein was born into a Jewish family from Yekaterinburg, Perm Governorate, Russian Empire.

[3] He won a bronze medal in shooting at the 1952 Olympics in Helsinki, in the free rifle 300 metre rifle three positions, as his teammate Anatoli Ivanovich Bogdanov won the gold medal, and Robert Bürchler of Switzerland won the silver medal.

[8][12] He also won a number of world, European, and USSR championships in his career.

[9] He won gold medals as part of the Soviet Union team in both the 25 metre center-fire pistol and the 50 metre pistol in the 1954 World Championships in Caracas.