Author
- Henry de Bracton1
- Ibn Bardis1
- Ibn Hajar al-Asqalani1
- Ibn Manzur1
- Ibn al-Kharrāṭ1
- Ibn al-Salah1
- Ibn al-Wardi1
- Ibn ʿAqīl1
- Innocent III1
- Isaac Alfasi1
- Isaac ben Joseph of Corbeil1
- Ismail al-Isfahani1
- Izz al-Din ibn 'Abd al-Salam1
- Izz al-Din ibn Hibatullah ibn Abi l-Hadid1
- Jacob ben Asher1
- Jacobus de Cessolis1
- Jacopo Piccolomini-Ammannati1
- Jacques Lempereur1
- Jalal Al-Din Al-Khabazi1
- Jami1