Bahmanyār b. al-Marzubān, Abū al-Ḥasan (or Abū al-Ḥusayn) (d. 458/1066), was an Iranian philosopher and one of the most prominent students of Ibn Sīnā. There has been much confusion over his names: one source, a 9th/15th-century manuscript of Ibn Sīnā’s Mubāḥathāt, gives his kunya as Abū al-Ḥusayn, describing him as al-kātib (the chancery secretary), while Ibn Abī Uṣaybiʿa (p. 458) calls him Abū al-Ḥasan. In addition, he was erroneously given the title Kiyā Rāʾīs by Niẓāmī ʿArūḍī (p. 82), which …