Nasir Khusraw (; 1004 - between 1072-1088) was a Persian Isma'ili poet, philosopher, traveler, and missionary ( and later Hujjah of Imam al-Mustansir Billah) for the Isma'ili Fatimid Caliphate.

He was a prominent Isma'ili philosopher and theologian of the Fatimids, authoring numerous philosophical works. He is widely recognized