Author
- Ibrāhīm ibn ʻAlī Ṭaraṣūṣī1
- Imam Ar-Rafi'i1
- Innocent VIII1
- Innocent XI1
- Isaac Alfasi1
- Isaac Israeli ben Joseph1
- Isaak ben Meïr from Düren1
- Isfarāyīnī, Muḥammad ibn Muḥammad, d. 13461
- Iskandar Rūmī1
- Ismāʻīl ibn Abī Bakr Ibn al-Muqrī1
- Jacob Anatoli1
- Jacob ben Jacob, ha-Kohen, -approximately 12701
- Jacobus Balbi1
- Jacomo Veronese1
- Jacopo Nannis de Piccolomini1
- Jacopo Piccolomini-Ammannati1
- Jacopo Ragone1
- Jacopone da Todi1
- Jacques Millet1
- Jaghmini1