犹太教改革派，或称犹太教自由派、犹太教进步派。犹太教改革派认为在众多现代派别中，自己是最进步的一派。这一派认为信仰须与时并进，真理须由经验与理论而得，而非从律法书而来。他们重视个人操守过于礼仪，因此，其宗教运动表现高度自主，不存着任何权威。律法为人遵从，并非因它「上天颁布」，乃因它对信仰生活有意义。

改革自上一世纪开始，那时，有科学头脑的人，不再相信律法书的启示的真确性和约束力。他们鼓吹改变仪文和敬拜，放弃洁净条例，把希伯来文写成的祷文译成本地话，把风琴引进会堂，并缩短仪式的时间。有些改革派的会众改为在星期日敬拜，而非以往的星期五晚安息日。　　

Reform Judaism (also known as Liberal Judaism or Progressive Judaism) is a major confessional division within Judaism, which emphasizes the evolving nature of the religion, the superiority of its ethical aspects compared to the ceremonial ones, and a belief in a continuous revelation not centered on the theophany at Mount Sinai. It is characterized by a lesser stress on ritual and personal observance, regarding Jewish Law as of basically non-binding nature, and great openness to external influences and progressive values. The origins of Reform Judaism lay in 19th-century Germany, where its early principles were formulated by Rabbi Abraham Geiger and his associates. Its greatest center today is in North America.