Author
- Hugh of Fouilloy1
- Hélinand of Froidmont1
- Ibn Amir Hajj1
- Ibn Arafa1
- Ibn Daqiq al-Eid1
- Ibn Ghānim, ʻIzz al-Dīn ʻAbd al-Salām ibn Aḥmad, -1279?1
- Ibn Khallikan1
- Ibn al-Mulaqqin1
- Ibn ʻurwah1
- Ibrāhīm al-Ḥusaynī1
- Innocent III1
- Isaac Alfasi1
- Isaac Israeli ben Joseph1
- Isaak ben Meïr from Düren1
- Ismāʻīl ibn Abī Bakr Ibn al-Muqrī1
- Jacobus de Cessolis1
- Jacopo Nannis de Piccolomini1
- Jacopo Piccolomini-Ammannati1
- Jacques Bruyant1
- Jacques de Vitry1