Abū Muḥammad ʿAbdallāh ibn Jaʿfar (ibn Muḥammad) ibn Durustawayh ibn al-Marzubān al-Fārisī al-Fasawī al-Naḥwī, best known as Ibn Durustawayh (872 – May 958), was a Persian grammarian, lexicographer and student of the Quran and hadith. He was born in the Persian town of Fasa to Jaʿfar b. Durustawayh (died), and died in Baghdad.