Scribe
- Johannes van der Kemp1
- Johannes, de Beylario1
- John Capgrave1
- John Clerk1
- John Shirley1
- John Waller1
- Judah ben Jacob1
- Kaspar Ytelhuser1
- Katharinenkirche, Nuremberg1
- Katherina Mast1
- Ladrāwī, ʻAbd al-Karīm ibn Muḥammad, active 14th century?1
- Laurenziano Leone1
- Leonhard Bernecker1
- Lorenzo da Pisa1
- Manouēl Grēgoropoulos1
- Master of the Ottoboni Livy1
- Masullus1
- Matheus de Stettindorff1
- Maḥmūd ibn Muḥammad ibn Maḥmūd1
- Maḥmūd ibn Mūsá Ruhāwī1