- Jamāl al-Dīn Khvānsārī1
- Jewish Community of Amsterdam, Netherlands1
- Jewish Community of Padua, Italy1
- Jews1
- Joshua Benzion Segre1
- Judah Leib Prossnitz1
- Judah Rosanes1
- Kalonymus ben Kalonymus1
- Kamal al-Din al-Ghazzi1
- Kanjāwī, Jibrīl ibn ḥasan, 1351 or 21
- Khalīfah Shāh Muḥammad Kanawjī1
- Khalīl ibn Muḥammad Fattāl1
- Khayālī Bukharāʼī1
- Khiḍr ibn Ilyās Yāyābāshīzādah1
- Khvājah Muḥammad Pārsā1
- Kokkoka1
- Kulaynī, Muḥammad ibn Yaʻqūb, -941?1
- Kuraydī, Aḥmad ibn ḥusayn, 18th cent1
- Kurdī, Aḥmad1
- Kurdī, ʻAbd Allāh ibn Muḥammad, d. 16541