Author
- Hugh of Saint-Cher1
- Humphrey Wellys1
- Iacopo Bracciolini1
- Ibn Abi Zayd al-Qayrawani1
- Ibn Asakir1
- Ibn Ghazi al-Miknasi1
- Ibn Habib al-Halabi1
- Ibn Hijjah al-Hamawi1
- Ibn al-Farid1
- Ibn al-Jazari1
- Ibn al-Kharrāṭ1
- Ibn al-Ḥājib1
- Ibrāhīm al-Ḥalabī1
- Imam Birgivi1
- Imām al-Dīn ibn Luṭf Allāh Lāhūrī1
- Isaac Lattes1
- Isidore of Seville1
- Ja'far Kashfi1
- Jacob Anatoli1
- Jacobus de Cessolis1