Author
- Jacopone da Todi1
- Jacques Legrand1
- Jacques Millet1
- Jagannatha Panditaraja1
- Jalal al-Din Mohammad Tabrizi1
- Jalal al-Din al-Qazwini1
- Jamāl al-Dīn Ḥaṣīrī1
- Jamālī Ardistani1
- Jawad al-Amili1
- Jayadeva1
- Jayyānī, al-Ḥusayn ibn Muḥammad, 1035-1105?1
- Jaʻfar Astarābādī1
- Jaʻfar Vāʻiẓ1
- Jaʻfar ibn Khaḍir Janājī1
- Jean Dupin1
- Jean Gerson1
- Jerónimo Román y Zamora1
- Jews1
- Joannes de Crivelli1
- Joham de Vernoils1