Scribe
- Ibrāhīm ibn Muḥammad Barzanjī1
- Ibrāhīm ibn Muḥammad Ghaznawī1
- Ibrāhīm ibn Muḥammad Mahdī1
- Ibrāhīm ibn Sulaymān Ḥanafī1
- Ibrāhīm ibn Yūsuf Sarkhābī1
- Ibrāhīm ibn ʻAlī Qādirī1
- Ibrāhīm ibn Ḥasan ibn Pīr Mullā Ḥasan1
- Ignatius de Mediolano1
- Ilyās ibn Khamzah ʻAlī Niyat ʻAlī ibn Khamzah1
- Isidore of Kyiv1
- Isidorus1
- Ismāʻīl Rushdī1
- Ismāʻīl ibn ʻAbd Allāh Khālidī1
- Ismāʻīl ibn Ṣāliḥ1
- Ismāʻīl Ṭarabzūnī1
- Istānbūlī, Darwīsh Muḥammad ibn Ḥasan1
- Jacobus Benedictus Eximeno1
- Jacobus de Adriani1
- Jacobus de Mutina1
- Jacopo Tiraboschi1