Author
- Ibn al-Kharrāṭ1
- Ibn al-Tayyib1
- Ibn al-Ḥājib1
- Ibn ʻAbd al-Riḍá1
- Ibrāhīm ibn Muḥammad Ibn Zuqqāʻah1
- Ibrāhīm ibn Mūsá Ṭarābulusī1
- Ikhtiyār al-Dīn ibn Ghiyāth al-Dīn1
- Imam Birgivi1
- Inayet Efendi1
- Isaac Aboab1
- Isaac Newton1
- Isobel Salcedo Larralde1
- Issachar ben Mordecai ibn Susan1
- 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
- Jayadeva1
- Jayakr̥ṣṇa1
- Jayāditya1