Scribe
- Ibn Abī Ṭālib, ʻAlī ibn Maḥmūd, active 13th century?1
- Ibn Darwīsh, Ibrāhīm ibn Muḥammad1
- Ibn Muḥammad Jaʻfar Muḥammad Bāqir al-Sharīf al-Naṣīr al-Ṭūsī1
- Ibn Muḥammad Riz̤ā Muḥammad1
- Ibrāhīm Bahjat Ḥamīdī1
- Ibrāhīm ibn Abī al-Suʻūd Jīzāwī1
- Ibrāhīm ibn Aḥmad Ḥanāshī1
- Isidore of Kyiv1
- J. Clynton1
- Jacob Ben Atar1
- Jacobus de Adriani1
- Jacobus de Mutina1
- Jayata, son of Valabhadra1
- Jean d'Aussert1
- Jehan Engremer1
- Joannes Suardus1
- Johann Pilter1
- Johann Schwayckofer1
- Johann von Neuburg1
- Johannes Antonius de Mirano1