Author
- John Felton1
- John II of Castile1
- John XXI1
- John of Lancaster, 1st Duke of Bedford1
- John, Duke of Berry1
- Joseph ben Moses Sarfati1
- Josephus1
- Juan de Torquemada1
- Juana I of Castile1
- Jullien Gervais1
- Kingdom of England1
- Kingdom of Naples1
- Laurentius Cynthius1
- Louis XII of France1
- Luca Pacioli1
- Ludovico Foscarini1
- Luigi de' Medici1
- Maffeo Vegio1
- Malavolti family1
- Manṣūr Ibn-Muḥammad Ibn-Aḥmad1