Author
- Isaak ben Meïr from Düren1
- Isabella I of Castile1
- Ismail al-Isfahani1
- 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
- Ismāʻīl ibn ʻAlī ibn al-Ḥāʼik1
- Isobel Salcedo Larralde1
- Israel Alnaqua1
- Israel Yaakov Algazi1
- Istanbulī, Muṣṭafá Zakī1
- Isḥāq1
- Isḥāq ibn Ibrāhīm Fārābī1
- Isḥāq ibn Yūsuf Ṣardafī1
- Ja'far Kashfi1
- Jaafar Al-Sadiq1
- Jabartī, Ḥasan ibn Ibrāhīm, 1698 or 1699-1774?1