Scribe
- Iacobus Tarranus1
- Ibn Muḥammad Jaʻfar Muḥammad Bāqir al-Sharīf al-Naṣīr al-Ṭūsī1
- Ibn Muḥammad Riz̤ā Muḥammad1
- Ibrāhīm Bahjat Ḥamīdī1
- Ibrāhīm Ibn al-Ḥusn1
- Ibrāhīm ibn Aḥmad Ḥanāshī1
- Ibrāhīm ibn Ḥasan ibn Pīr Mullā Ḥasan1
- Ignatius de Mediolano1
- Ilyās ibn Khamzah ʻAlī Niyat ʻAlī ibn Khamzah1
- Isidore of Kyiv1
- Isidorus1
- Ismāʻīl ibn Ṣāliḥ1
- Jacob Ben Atar1
- Jacobus Benedictus Eximeno1
- Jacobus de Adriani1
- Jacobus de Mutina1
- Jacopo Tiraboschi1
- Jacopo di Domenicho1
- Jagannāth Āpājī Pārkar Rānjhekar1
- Jagannātha1