Author
- Ibn al-Nafis1
- Ibn al-Shatir1
- Ibn al-Wardi1
- Ibn ʻurwah1
- Ibn ʻĀdil, ʻUmar ibn ʻAlī, 15th cent1
- Ibn ʿAqīl1
- Ibrāhīm al-Ḥusaynī1
- Ibrāhīm ibn Muḥammad ʻIṣām al-Asfarāyīnī1
- Ibrāhīm ibn ʻAlī Ṭaraṣūṣī1
- Imad ad-Din al-Isfahani1
- Imam Ar-Rafi'i1
- Immanuel Bonfils1
- Innocent III1
- Isaac Alfasi1
- Isaac Israeli ben Joseph1
- Isaak ben Meïr from Düren1
- Isfarāyīnī, Muḥammad ibn Muḥammad, d. 13461
- Jabir ibn Hayyan1
- Jacob ben Jacob, ha-Kohen, -approximately 12701
- Jacobus de Cessolis1