Author
- Ibn-Al-Habariya1
- Ibrāhīm ibn Muḥammad ḥarīthī1
- Imam Birgivi1
- Innocent I1
- Innocent III1
- Inquisition Sicily)1
- Ippolito Libri1
- Isaac Alfasi1
- Isaac the Blind1
- Isabella I of Castile1
- Ismail ibn Hammad al-Jawhari1
- Ismāʻīl Ghāzānī1
- Ismāʻīl ibn Aḥmad Ibn al-Athīr1
- Ismāʻīl ibn Ibrāhīm İsfendiyaroǧlu1
- Ismāʻīl ibn ʻAlī Ibn Muʻallá1
- Izz al-Din ibn Hibatullah ibn Abi l-Hadid1
- Jacob ben David ben Yom Tov1
- Jacob ibn Habib1
- Jagaddhara1
- Jalaluddin al-Mahalli1