Author
- John Versor1
- John Wycliffe1
- John XXI1
- John XXII1
- John de Beauchesne1
- John de Breton1
- John de Seccheville1
- John of Damascus1
- John of Genoa1
- John of Saxony1
- John of Seville1
- João Freire1
- João Gomes da Silva1
- Juan Gallo1
- Juan Valenzuela Velázquez1
- Juan de Torquemada1
- Juana I of Castile1
- Julius III1
- Kollegium Sankt Nikolaus1
- Lambert le Bègue1