Abu Abd Allah Amghar Ibn Tumart (Berber: Amghar ibn Tumert, Arabic: أبو عبد الله امغار ابن تومرت, ca. 1080–1130 or 1128) was a Muslim Berber religious scholar, teacher and political leader, from the Sous in southern Morocco. He founded and served as the spiritual and first military leader of the Almohad movement, a puritanical reform movement launched among the Masmuda Berbers of the Atlas Mountains. Ibn Tumart launched an open revolt against the ruling Almoravids during the 1120s. After his death his followers, the Almohads, went on to conquer much of North Africa and part of Spain.