Scribe
- Jaʻfar ibn Muḥammad Iṣfahānī1
- Jaʻfar ibn Muṣṭafá Nakdahʹwī1
- Jaʻfar ibn Ḥasan Barzanjī1
- Jehan Engremer1
- Jeronimus de Sandei1
- Jibrāyil ibn Mikhāyil Ḥamawī1
- Joannes Suardus1
- Johann Pilter1
- Johann von Neuburg1
- Johannes Vischer1
- Johannes de Kuppferberg1
- Johannes de Luxia1
- Johannes of Regensburg1
- Johannes van der Kemp1
- Johannes, de Beylario1
- John Clerk1
- Joseph ben Abraham Finzi1
- Joseph ben Isaac Gallico1
- Judah ben Jacob1
- Jundī, Arslān ibn Muḥammad ʻAlī, active 19th century1