Author
- Guillaume de Lanicia2
- Heinrich von Friemar2
- Henry Suso2
- Ibn Hijjah al-Hamawi2
- Ibn Malik2
- Immanuel Bonfils2
- Jalal al-Din al-Suyuti2
- Jalaluddin al-Mahalli2
- Jean Germain2
- Jean de Meun2
- Johann Herolt2
- Johannes Nider2
- John Burgh2
- John Felton2
- John of Genoa2
- John of Wales2
- Jordan von Quedlinburg2
- Leo I2
- Lorenzo Valla2
- Majd ad-Dīn Ibn Athir2