Baruch Aaron "Bernard" Poupko (February 5, 1917 – April 14, 2010) was a Russian-born American scholar, author, and lecturer.

A refugee who escaped persecution in his native Russia, he went on to become a prominent figure in the Jewish community in the United States whose career largely focused on advocating for Soviet Jews.

Eliezer Poupko was the chief Rabbi in their community, and also an activist who sent letters describing the local conditions for Jews to Rabbinic leaders in the United States and England.

He is the grandfather of Chaim Poupko, senior rabbi of Congregation Ahavath Torah in Englewood, New Jersey.

[3][4] In 1983, filmmaker Sheila Chamovitz produced a half-hour documentary about Poupko entitled Murray Avenue: A Community in Transition.