Author
- John de Seccheville1
- John of Damascus1
- John of Glastonbury1
- John of Howden1
- John of Saxony1
- João Freire1
- Juana I of Castile1
- Julianus Pomerius1
- Julius II1
- Julius III1
- Kollegium Sankt Nikolaus1
- Konrad von Brundelsheim1
- Lambert le Bègue1
- Leon Battista Alberti1
- Leontios of Neapolis1
- Leopold Camp1
- Lodovico della Torre1
- Lope de Olmedo1
- Lorenzo Belo1
- Louis XII of France1