Author
- Ibn al-Qasim1
- Ibn ʿAqīl1
- Ibrāhīm ibn Muḥammad Aʻlam al-Baṭalyawsī1
- Ibrāhīm ibn Muḥammad Birmāwī1
- Innocent III1
- Isidore of Seville1
- Ismāʻīl Qarah Kamāl1
- Izz al-Din ibn Hibatullah ibn Abi l-Hadid1
- Jacques Legrand1
- Jalal al-Din Davani1
- Jalaluddin al-Mahalli1
- Jamāl al-Dīn Ḥaṣīrī1
- Jayyānī, al-Ḥusayn ibn Muḥammad, 1035-1105?1
- Jerome1
- Johannes Gherinx1
- John Dominici1
- John Gower1
- Kamāl al-Dīn ibn Āsāyish Shirwānī1
- Khalīl ibn Shāhīn1
- Khuwarizmī, Jamāl al-Dīn Abu Bakr1