- Jews--Education1
- Jews--Folklore1
- Jews--Legal status, laws, etc.3
- Jews--Medicine5
- Jews--Persecutions4
- Jews--Politics and government2
- Jews--Social life and customs2
- Jidd Ḥafṣī, ʻAlī ibn Luṭf Allāh, active 17th century-18th century1
- Jinn3
- Jiří, z Poděbrad, King of Bohemia, 1420-14711
- Joannes de Caligariis1
- Job (Biblical figure)1
- John I, King of Portugal, 1357-14331
- John VIII Palaeologus, Emperor of the East, 1392-14481
- John, King of England, 1167-12161
- John, the Apostle, Saint3
- John, the Baptist, Saint1
- Joseph (Son of Jacob)4
- Judaism38
- Judaism--Apologetic works1