Satmar (or Satmar Hasiism or Satmarer Hasidism) (חסידות סאטמאר) is a Hasidic community which originated from mostly Hungarian and Romanian Hasidic Jews who fled Europe after World War II, founded and led by the late Grand Rebbe Yoel Teitelbaum (1887-1979), who was the official rabbi of the town of Szatmárnémeti (now Satu Mare, Romania) up to World War II, at that time in the Kingdom of Hungary. Members of his congregation are mainly referred to as Satmar Hasidim or Satmarer Hasidim.