Author
- Ibn Hamdun1
- Ibn Kemal1
- Ibn Khallikan1
- Ibn Zaqqa'ah1
- Ibn al-Banna' al-Marrakushi1
- Ibn al-Wardi1
- Ibrāhīm al-Ḥusaynī1
- Ibrāhīm ibn Muḥammad ʻIṣām al-Asfarāyīnī1
- Imad ad-Din al-Isfahani1
- Immanuel Bonfils1
- Innocent III1
- Isaac Alfasi1
- Isaac Israeli ben Joseph1
- Isaak ben Meïr from Düren1
- Jabir ibn Hayyan1
- Jacobus de Cessolis1
- Jaghmini1
- Jalal al-Din al-Qazwini1
- Jamālī Ardistani1
- Jean Barthélémy1