- Italy--Brondolo1
- Italy--Città di Castello1
- Italy--Monticchiello1
- Italy--Padua1
- Italy--Pienza1
- Jewish ethics1
- Jewish philosophy1
- Jewish religious poetry, Judeo-Arabic1
- Judaism1
- Judeo-Arabic language1
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Ḥāshiyah ʻalá Sharḥ Shamsīyah1
- Justinian I, Emperor of the East, 483?-5651
- Jāmiʻ al-Azhar1
- Khabbāzī, ʻUmar ibn Muḥammad, 1231 or 1232-1292. Mughnī fī uṣūl al-fiqh1
- Khaṭīb al-Baghdādī, Abū Bakr Aḥmad ibn ʻAlī, 1002-1071. Asmāʼ al-mubhamah fī al-anbāʼ al-muḥkamah1
- Kiddush1
- Kāfiyah (Ibn al-Ḥājib, ʻUthmān ibn ʻUmar)1
- Lancelot (Legendary character)1
- Land grants1
- Lathom, Robert de, 13th century1