This essay is a reflection on the very notion of "pluralism" examined in a philosophical and theological approach. It evokes Quranic verses on pluralism and then examines the thoughts of different Muslim thinkers on the question, such as al-Farabi (d. 950), al-Ghazali (1058-1111) in the tenth and twelfth centuries, and Tierno Bokar Salif Tall (1875-1939), from Mali, in the twentieth.