Author
- Ibn Sab'in1
- Ibn Sa‛īd al- Ḥillī1
- Ibn Zanjalah1
- Ibrāhīm Ibn ʻAbd al-Ṣamad1
- Ibrāhīm ibn Muḥammad ḥarīthī1
- Imbert Feutrier1
- Immanuel Bonfils1
- Immanuel Tremellius1
- Ippolito Libri1
- Isaac Alfasi1
- Isaac the Blind1
- Ismail ibn Hammad al-Jawhari1
- Ismāʻīl Ghāzānī1
- Ismāʻīl Jarrāḥī1
- Ismāʻīl ibn ʻAlī Ibn Muʻallá1
- Izz al-Din ibn Hibatullah ibn Abi l-Hadid1
- Jabir ibn Hayyan1
- Jacob ben David ben Yom Tov1
- Jacob ibn Habib1
- Jacobo Bellenden1