Author
- Jamāl al-Dīn Aḥmad ibn Muḥammad Ẓāhirī1
- Jamāl al-Dīn Ḥaṣīrī1
- Jean de Lignieres1
- Jean de Meun1
- Johannes von Freiburg1
- John Gower1
- John Halgren of Abbeville1
- John Larry England1
- John Wycliffe1
- John of Saxony1
- John of Wales1
- Joseph ben Abraham Gikatilla1
- Joseph ben Judah ibn Aknin1
- Kalāʼī, Muḥammad ibn Sharaf, d. 13751
- Luke the Evangelist1
- Malik ibn Anas1
- Matteo dei Libri1
- Matthew of Vendôme1
- Maurice de Sully1
- Maximus of Turin1