FEINSTEIN, MOSHE (1895–1986), was an American Orthodox rabbi and Jewish legal authority. Born to a rabbinical family in Uzda, Belorussia, Feinstein prepared for a career in the rabbinate under the tutelage of his father, David Feinstein, and subsequently as a student in the leading Talmudic academies of that region. Upon his arrival in the United States in 1937, Feinstein became dean of the Talmudic academy Metivta Tiferet Jerusalem in New York, a position that he held until his death. He played a prominent role in both the Union of Orthodox Rabbis and Agudat Yisraʾel, the world movement of Orthodox Jewry.

Feinstein enjoyed worldwide recognition by Orthodox rabbis and laity alike as a leading interpreter and decisor of Jewish law. His responsa (legal decisions) have been published in a work entitled Iggerot Mosheh (Letters of Moshe). Students of Jewish law have enthusiastically hailed the appearance of Iggerot Mosheh...