Moisey Davidovich Kasyanik (Russian: Моисе́й Дави́дович Касья́ник, also "Moisei and Moysey" and "Kas'ianik, Kosyanik, or Kosianiki"; born January 1, 1911 – 1988) was a Soviet weightlifter.

[1][2][3][4][5] He was Jewish, and was born in Novo-Zhitomyr, Kherson Guberniya (Russian Empire).

[1] He won a gold medal at the 1937 Workers' Olympiad in Antwerp, and won bronze medals at the 1946 World Weightlifting Championships in Paris (60 kg)[2][6] and at the 1947 European Weightlifting Championships in Helsinki (60 kg).

[1][3][5][7]