Abū Ḥātim al-Muẓaffar al-Isfazārī (fl. late 11th – early 12th century CE) was a Persian Muslim mathematician from Khurasan. According to Ibn al-Athir and Qutb al-Din al-Shirazi, he worked in the Seljuq observatory of Isfahan. Nezami Aruzi met him in Balkh in (in present‐day Afghanistan) in 1112 or 1113. Al-Isfazārī's corpus of mechanics is composed of two sets of texts, which have been published in Matn al-Muẓaffar al-Isfazārī fī cilmay al-aṯqāl wa’l-ḥiyal by the Al-Furqan Islamic Heritage Foundation.