Scribe
- Isidorus1
- Ismāʻīl Rushdī1
- Ismāʻīl ibn ʻAbd Allāh Khālidī1
- Ismāʻīl ibn Ṣāliḥ1
- Ismāʻīl Ṭarabzūnī1
- Istānbūlī, Darwīsh Muḥammad ibn Ḥasan1
- Jatārakṛṣṇa Bhaṭṭa1
- Jaʻfar ibn Muḥammad Bashrawānī1
- Jaʻfar ibn Muḥammad Iṣfahānī1
- Jaʻfar ibn Muṣṭafá Nakdahʹwī1
- 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