Rabbi Yisroel Friedman of Ruzhyn (1797-1850) (Hebrew: ישראל פרידמאן מרוז'ין‎) was a Hasidic rebbe. Known as der heyliger rizhiner (Yiddish: דער הייליגער רוזשינער), "the holy one from Ruzhin", he was the progenitor of several Hasidic dynasties known collectively by the name Ruzhin. As the son of Rebbe Sholom Shachne of Prhobisht, who was the son of Rabbi Avraham HaMalach, Rabbi Yisroel Friedman was a direct descendant of Rabbi Dov Ber, the Maggid of Mezritsh who was the main disciple of the Baal Shem Tov.