Author
- Jean Froissart1
- Jean de Meun1
- Jean de Roquetaillade1
- Johannes Auerbach1
- Johannes Nider1
- Johannes Paulus1
- Johannes von Kastl1
- Johannes von Werdea1
- Johannis Hieronymus1
- John Burgh1
- John Chrysostom1
- John Cleseby1
- John Versor1
- John Wycliffe1
- John Zonaras1
- John of Lancaster, 1st Duke of Bedford1
- John of Wales1
- Jörg Muelich1
- Kingdom of England1
- Klaus von Stille1