Author
- Immanuel Bonfils1
- Imām al-Dīn ibn Luṭf Allāh Lāhūrī1
- Inayat Khan1
- Ippolito Libri1
- Irbilī, Aḥmad ibn Mūsá, d. 12251
- Isaac Albalag1
- Isaac Israeli ben Joseph1
- Isaac Israeli ben Solomon1
- Isaac Lattes1
- Isaac of Troki1
- Isaac the Blind1
- Isaak ben Meïr from Düren1
- Ismail al-Isfahani1
- Ismail ibn Hammad al-Jawhari1
- Ismāʻīl Mufīd1
- Ismāʻīl Qarah Kamāl1
- Ismāʻīl ibn Abī Bakr Ibn al-Muqrī1
- Ismāʻīl ibn Ibrāhīm İsfendiyaroǧlu1
- Ismāʻīl ibn Muḥammad Qūnawī1
- Ismāʻīl ibn ʻAlī Ibn Muʻallá1