- Jews--Persecutions2
- Jews--Politics and government2
- Jighmīnī, Maḥmūd ibn Muḥammad, -1221?. Qānūnchah1
- Jihad1
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- John IV, King of Portugal, 1604-16561
- John Manuel, Prince of Portugal, 1537-15541
- John V, King of Portugal, 1689-17501
- John, the Baptist, Saint1
- Joseph (Son of Jacob)1
- Joseph (Son of Jacob) in the Qurʼan1
- Juana, of Austria, Princess of Portugal, 1535-15731
- Judaism23
- Judaism--Ari rite1
- Judaism--Customs and practices25
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- Judeo-Arabic literature3
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