Author
- Jayarāmanyāyapañcānana1
- Jean Carteron1
- Joanna I of Naples1
- Joannes Dominicus de Marchis1
- Joannes Thomas Beltamino1
- Joham de Vernoils1
- Johannes Cnipius1
- Johannes Mellarinus1
- Johannes Tostius1
- Johannes von Kastl1
- John Chrysostom1
- John Cornelius1
- John Eyr1
- John Frederick II of Saxony1
- John II of Castile1
- John of Ibelin1
- John of Lancaster, 1st Duke of Bedford1
- John, Duke of Berry1
- Juan de Torquemada1
- Juana I of Castile1