Author
- Jacopo Ragone1
- Jean Passerat1
- Joannes Dominicus de Marchis1
- Joham de Vernoils1
- Johannes Lichtenberger1
- Johannes Mellarinus1
- Johannes Tostius1
- Johannes von Kastl1
- John Burgh1
- John Chrysostom1
- John Cornelius1
- John Felton1
- John XXI1
- Juan de Torquemada1
- Kingdom of Bohemia1
- Kingdom of England1
- Konrad III. von Soltau1
- Laurentius Cynthius1
- Leonardo Loredan1
- Leonhard Freisleben1