Author
- Johannes Gherinx1
- Johannes Hymmonides1
- Johannes Nider1
- Johannes ab Indagine1
- John Chrysostom1
- John Gower1
- John XXII1
- John de Beauchesne1
- John of Howden1
- Juan Luis Vives1
- Julian of Toledo1
- Kingdom of Castile1
- Leon Battista Alberti1
- Lorenzo Valla1
- Lucan1
- Lucian of Samosata1
- Ludovicus Valentia de Ferraria1
- Luis Cancer1
- Luis Velasco1
- Lydgate, John, 1370?-1451?1