- Jews, Italian1
- Jews--Dietary laws9
- Jews--Legal status, laws, etc.1
- Jews--Medicine2
- Jews--Persecutions2
- Jews--Politics and government2
- Jighmīnī, Maḥmūd ibn Muḥammad, -1221?. Qānūnchah1
- Jihad1
- Jinn1
- John IV, King of Portugal, 1604-16561
- John Manuel, Prince of Portugal, 1537-15541
- John V, King of Portugal, 1689-17501
- Juana, of Austria, Princess of Portugal, 1535-15731
- Judaism23
- Judaism--Ari rite1
- Judaism--Customs and practices25
- Judaism--Doctrines1
- Judaism--Liturgy26
- Judaism--Prayers and devotions12
- Judeo-Arabic literature3