Author
- Isḥāq1
- Isḥāq ibn Ibrāhīm Fārābī1
- Izz al-Din ibn 'Abd al-Salam1
- Izzatullah Bengali1
- Jaafar Al-Sadiq1
- Jaghmini1
- Jahangir Mirza Qajar1
- Jai Singh II1
- Jakob Eduard Polak1
- Jalal al-Din Mohammad Tabrizi1
- Jamāl al-Dīn Aḥmad ibn Muḥammad Ẓāhirī1
- Jamālī Ardistani1
- Jawad al-Amili1
- Jayyānī, al-Ḥusayn ibn Muḥammad, 1035-1105?1
- Jazūlī, Yaḥyá ibn Mūsá1
- Jaʻfar Vāʻiẓ1
- Jaʻfar ibn al-Ḥusayn Shūshtarī1
- Jiang Zhi1
- John Gower1
- John of Genoa1