Author
- Jean Gerson1
- Jean de Bernuy1
- Jean de Malian1
- Jean-François Roussin1
- Joannes Oliva1
- Joannes de Crivelli1
- Johann Herolt1
- Johannes Gherinx1
- Johannes Hymmonides1
- Johannes Leonis1
- Johannes Nider1
- Johannes Paulus1
- Johannes ab Indagine1
- John Capgrave1
- John Cassian1
- John Chrysostom1
- John Gage1
- John Larry England1
- John Mandeville1
- John Tiptoft, 1st Earl of Worcester1