Author
- João Freire1
- João Gomes da Silva1
- Juan Gallo1
- Juan Luis Vives1
- Juan Martínez Silíceo1
- Juan Valenzuela Velázquez1
- Juan de Mena1
- Juan de Torquemada1
- Juana I of Castile1
- Julius III1
- Jörg Muelich1
- Kingdom of Bohemia1
- Kingdom of Naples1
- Kollegium Sankt Nikolaus1
- Lambert le Bègue1
- Lapo da Castiglionchio1
- Laurentius Cynthius1
- Leonhard Freisleben1
- Leontios of Neapolis1
- Leopold Camp1