Rabbi Joel Teitelbaum (1887-1979) was a prominent Hungarian-born Hasidic rabbi and the founder of the Satmar Hasidic dynasty. He is best known for his strong opposition to Zionism and his advocacy for traditional Jewish values. Teitelbaum led a large community of followers in the United States after World War II, particularly in Williamsburg, Brooklyn. Teitelbaum established the Satmar community in New York, where he emphasized the importance of religious observance and education. His teachings and writings continue to influence many within the Hasidic world today, and his legacy is marked by a commitment to preserving Jewish traditions in the face of modernity.