Author
- Ismāʻīl ibn Luṭf Allāh Bākharzī1
- Ismāʻīl ibn Muḥammad Qūnawī1
- Ismāʻīl ibn Muḥammad al-ʻAjlūnī7
- Ismāʻīl ibn ʻAlī ibn al-Ḥāʼik1
- Isobel Salcedo Larralde1
- Israel Alnaqua1
- Israel Sarug5
- Israel Yaakov Algazi1
- Issachar ben Mordecai ibn Susan1
- Isḥāq1
- Isḥāq ibn Ibrāhīm Fārābī1
- Isḥāq ibn Ḥasan Tūqādī3
- Ivo of Chartres3
- Izz al-Din ibn 'Abd al-Salam1
- Izz al-Din ibn Hibatullah ibn Abi l-Hadid4
- Izzatullah Bengali1
- Ja'far Kashfi4
- Jaafar Al-Sadiq1
- Jabartī, Ḥasan ibn Ibrāhīm, 1698 or 1699-1774?3
- Jabir ibn Hayyan1