Author
- Imam Ar-Rafi'i3
- Ismāʻīl ibn Muḥammad al-ʻAjlūnī3
- Jabartī, Ḥasan ibn Ibrāhīm, 1698 or 1699-1774?3
- Jacobus de Teramo3
- Jalal al-Din Davani3
- Jalal al-Din al-Qazwini3
- Jean Gerson3
- Jewish Community of Carpentras, France3
- Johannes de Sacrobosco3
- John Chrysostom3
- Joseph ben Abraham Gikatilla3
- Joseph ha-Kohen3
- Jñānendrasarasvatī3
- Khayr al-Din al-Ramli3
- Khālid ibn ʻAbd Allāh al-Azharī3
- Kulaynī, Muḥammad ibn Yaʻqūb, -941?3
- Leon Battista Alberti3
- Leonardo Bruni3
- Mahmud ibn Abd al-Rahman al-Isfahani3
- Maḥmūd ibn ʻUbayd Allāh Burhān al-Sharīʻah3