Author
- Ismail al-Isfahani1
- Ismail bin Mohammad Rizi1
- Ismāʻīl Jarrāḥī1
- Ismāʻīl Mufīd1
- Ismāʻīl Qarah Kamāl1
- Ismāʻīl ibn Aḥmad Ibn al-Athīr1
- Ismāʻīl ibn Muḥammad Māzandarānī1
- Ismāʻīl ibn Muḥammad Qūnawī1
- Ismāʻīl ibn ʻAlī Ibn Muʻallá1
- Ismāʻīl ibn ʻAlī ibn al-Ḥāʼik1
- Israel Alnaqua1
- Israel Yaakov Algazi1
- Issachar ben Mordecai ibn Susan1
- Istanbulī, Muṣṭafá Zakī1
- Isḥāq ibn Ibrāhīm Fārābī1
- Isḥāq ibn Yūsuf Ṣardafī1
- Ivo of Chartres1
- Jabir ibn Hayyan1
- Jacob Berab1
- Jacob Israel Karmi1