Maturidiyya (Arabic: الماتريدية‎) is one of the main schools of Sunni Islamic theology. It was formalized by Abu Mansur Al Maturidi and brought the beliefs already present among most Sunnis under one school of systematic theology (kalam) and emphasised rationality and rationalism. It is considered one of the orthodox Sunni creeds alongside the Ash'ari school. Māturīdism has been the predominant theological orientation among the Sunni Muslims of Persia before the conversion to Shiaism in the 16th century, Hanafis, and the Ahl al-Ray (people of reason) and enjoyed a preeminent status in the Ottoman Empire and Mughal India. Outside the old Ottoman and Mughal empires, most Turkic tribes, Hui people, Central Asian, and South Asian Muslims also believe in Maturidi theology. There have also been