Scribe
- Johannes Theatinus Cycurius1
- Johannes Vischer1
- Johannes de Kuppferberg1
- Johannes de Luxia1
- Johannes of Regensburg1
- Johannes van der Kemp1
- Johannes, de Beylario1
- Johannis Caulier1
- John Clerk1
- Joseph ben Abraham Finzi1
- Joseph ben Isaac Gallico1
- Juan de la Mote1
- Judah ben Jacob1
- Jundī, Arslān ibn Muḥammad ʻAlī, active 19th century1
- Jābir ibn Ibrāhīm, active 16th century1
- Jābir ibn Sālim Shihāb al-Baghdādī1
- Jīlānī, Ibn Muḥammad Yūsuf, active 17th century1
- Kamal al-Din al-Ghazzi1
- Karmiyānī, Aḥmad ibn Muḥammad1
- Kastamūnī, ʻAbd al-Raḥmān1