Rabbi Yisroel (Israel) ben Eliezer (רבי ישראל בן אליעזר August 27, 1698 (18 Elul) – May 22, 1760), often called Baal Shem Tov or Besht, was a Jewish mystical rabbi. He is considered to be the founder of Hasidic Judaism (see also Mezhbizh Hasidic dynasty).