mystic and founder of the Ṣafavid (Ṣafavid Dynasty) order of mystics.

Ṣafī od-Dīn, a descendant of a family of provincial administrators, obtained his early education in Ardabīl, where his family held dependencies as a land grant from the central government. Later, in Shīrāz, he was influenced by Sufi (mystical) teachings. He then traveled to the province of Gilan (the Iranian Caspian province), where he spent 25 years as a murid (spiritual follower) of Sheikh Zāhid, whose daughter Bībī Fāṭimah he married. The other spiritual followers of Sheikh Zāhid, following his death, transferred their allegiance to Ṣafī od-Dīn, who then returned to Ardabīl, where he formed the Ṣafavid order.

The fame of Ṣafī od-Dīn increased as the new order gained recruits. The popularity of the order can be attributed in part to Ṣafī od-Dīn's policy of hospitality, especially to all who sought refuge. One of the sheikh's appellations was Khalīl-e ʿAjam (the Iranian Abraham, who is noted for hospitality in Iranian folklore). The order appears to have been a Sunnite (the traditionalists in Islam) order of mystics that made concessions to the followers of ʿAlī (the fourth caliph of Islam) without actually adhering to the doctrines of his party, that of the Shīʿites. The claim made by Ṣafavid court historians that Safī od-Dīn was a Shīʿite and a sayyid (descendant of ʿAlī) is false and misleading. Safī od-Dīn, himself, was a Sunnite of the Shāfiʿī school (one of the four schools of Sunnite law).