Satmar (; ; ; ) is a Hasidic group originating from the city of Szatmárnémeti, Hungary (now Satu Mare, Romania), where it was founded in 1905 by Rabbi Yoel Teitelbaum. Following World War II, it was re-established in New York, becoming one of the largest Hasidic movements in the world. After Rabbi Yoel's death, he was succeeded by his nephew, Rabbi Moshe Teitelbaum. Since the latter's death in 2006, the dynasty is split between his two sons, Rabbi Aaron Teitelbaum and Rabbi Zalman Leib Teitelbaum.