Scribe
- Jaʻfar ibn Muḥammad Iṣfahānī1
- Jaʻfar ibn Muṣṭafá Nakdahʹwī1
- Jeronimus de Sandei1
- Jibrāyil ibn Mikhāyil Ḥamawī1
- Johannes Baldung1
- Johannes Malgarius de Parma1
- Johannes Petrus Mathei1
- Johannes Vischer1
- Johannes de Luxia1
- Johannes van der Kemp1
- Johannes, de Beylario1
- Joseph ben Isaac Gallico1
- Juan de la Mote1
- Judah ben Jacob1
- Jābir ibn Ibrāhīm, active 16th century1
- Jābir ibn Sālim Shihāb al-Baghdādī1
- Kastamūnī, ʻAbd al-Raḥmān1
- Khalid Balti1
- Khūjah, Muḥammad Aḥmad1
- Kâtip Boşnāḳ Ibrāhīm ibn Aḥmet1