Author
- Ibn Jaber al-Andalusi3
- Ibn Mufliḥ al-Maqdisī, Muḥammad, -13623
- Ibn al-Imām3
- Ibn al-Kharrāṭ3
- Ibn al-Salah3
- Immanuel Bonfils3
- Isaac Newton3
- Ishmael ben Abraham Isaac ha-Kohen3
- Ismāʻīl Ghāzānī3
- Ismāʻīl ibn Ibrāhīm İsfendiyaroǧlu3
- Isḥāq ibn Ḥasan Tūqādī3
- Ivo of Chartres3
- Jabartī, Ḥasan ibn Ibrāhīm, 1698 or 1699-1774?3
- Jacob Anatoli3
- Jacob ben Asher3
- Jacobus de Teramo3
- Jacques Legrand3
- Jayakr̥ṣṇa3
- Jaʻfar Astarābādī3
- Jaʻfar ibn Khaḍir Janājī3