- Jews--Dietary laws14
- Jews--Education1
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- Jews--Medicine5
- Jews--Persecutions3
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- Ji bu--Bie ji lei--Ming3
- 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
- Juana, of Austria, Princess of Portugal, 1535-15731
- Judaism31
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