Author
- Ivo of Chartres1
- Jacobus Dinetus1
- Jacobus de Voragine1
- Jacopo Ragone1
- Jacques Millet1
- Jakob Christoph Blarer von Wartensee1
- Jalal al-Din al-Suyuti1
- Jawād ibn Saʻd Jawād al-Baghdādī1
- Jean Bayard1
- Jean Manesca1
- Jean Marot1
- Jean Passerat1
- Joannes Dominicus de Marchis1
- Joham de Vernoils1
- Johannes Lichtenberger1
- Johannes Mellarinus1
- Johannes Schöner1
- Johannes Tostius1
- Johannes von Kastl1
- John Burgh1