The Almoravid Kingdom played an important role in the course of history of Morocco (al-Maghrib) and the Bilad al-Sudan circa the 11th century A.D. Bennison argued that the Almoravid Kingdom originated from an Islamic reformation movement among the Sanhajah society. Through this movement, the Sanhajah communities were unified, forging a military alliance among them. The movement had a mission of spreading the true teachings of Islam through jihad. It is therefore the objective of this study to analyse the process of jihadi movement of the Almoravids in al-Maghrib and the Sudan in the 11th century A.D. In general, this article is a qualitative study, using a historical study and content analysis method in accumulating and analysing information available from relevant primary and secondary sources. Results of this study argued that the Almoravid Kingdom began with a reform movement led by Abd Allah ibn Yasin among the Sanhajahs. The movement evolved into a kingdom after seizing control important territories throughout al-Maghrib. This kingdom became more powerful under the leadership of Abu Bakr ibn Umar and Yusuf ibn Tashfin.