Author
- Husam al-Din al-Hajiri1
- Ibn Abi al-Isbaʻ1
- Ibn Battah1
- Ibn Daqiq al-Eid1
- Ibn Duraid1
- Ibn Jumay‘1
- Ibn Khalawayh1
- Ibn Taymiyyah1
- Ibn al-Ajdābī1
- Ibn al-Dubaythi1
- Ibn al-Nafis1
- Ibn-al-Anbārī1
- Ildibrandinus1
- Innocent IV1
- Isaac ben Joseph of Corbeil1
- Isidore of Seville1
- Ismāʻīl ibn Aḥmad Ibn al-Athīr1
- Izz al-Din ibn 'Abd al-Salam1
- Jacobus de Voragine1
- Jaghmini1