Pinchas Polonsky (Russian: Полонский Петр (Пинхас) Ефимович, born 1958) is a Russian-Israeli Jewish-religious philosopher, researcher, and educator active among the Russian-speaking Jewish community. He has written original books and a number of translations of works on Judaism.
During his underground activities in Moscow (1977–1987), he taught Judaism and was one of the founders of Machanaim. He lives in Israel, is an activist in the process of the modernization of Judaism and is a researcher on the topics of the late Rav Kook. Polonsky is the author of a commentary on the Torah under the title “Biblical Dynamics”. Dr. Polonsky initiated EJWiki, an academic encyclopedia on Jewish and Israeli topics.