Author
- Ibn Abī Sharīf1
- Ibn al-Jazari1
- Ibn-al-ʿAṭṭār, ʿAlī Ibn-Ibrāhīm1
- Ibrāhīm ibn Muḥammad Yamanī1
- Ibrāhīm ibn Muḥammad ʻIṣām al-Asfarāyīnī1
- Isaac Alfasi1
- Isaac the Blind1
- Ismāʻīl Jarrāḥī1
- Ismāʻīl ibn Aḥmad Ibn al-Athīr1
- Jacob Berab1
- Jacob Meyer1
- Jacob ben Jacob, ha-Kohen, -approximately 12701
- Jalal al-Din al-Qazwini1
- Jami1
- Jerome1
- Johannes ab Indagine1
- Josef ibn Tabul1
- Joseph ben Abraham Gikatilla1
- Joshua ben Israel Benveniste1
- Judah Leib Prossnitz1