Author
- Inayet Efendi1
- Isfarāyīnī, Muḥammad ibn Muḥammad, d. 13461
- Isobel Salcedo Larralde1
- Issachar ben Mordecai ibn Susan1
- Isḥāq1
- Izz al-Din ibn 'Abd al-Salam1
- Izz al-Din ibn Hibatullah ibn Abi l-Hadid1
- Jacob Berab1
- Jacob ben Jacob, ha-Kohen, -approximately 12701
- Jaimini1
- Jayadeva1
- Jayakr̥ṣṇa1
- Jean Filesac1
- Jean-François Roussin1
- Joannes Oliva1
- John Davnay1
- John Dennis1
- John Fortescue1
- John Sergeant1
- John Skyrrow1