- John, the Apostle, Saint2
- Joseph (Son of Jacob)1
- Juana, la Loca, Queen of Castile, 1479-15552
- Juana, of Austria, Princess of Portugal, 1535-15731
- Judaism2
- Judaism--Ari rite1
- Judaism--Liturgy2
- Judaism--Liturgy--Texts2
- Judaism--Prayers and devotions1
- Judeo-Arabic literature1
- Judeo-Persian language1
- Judges1
- Judges--Selection and appointment1
- Judgment Day1
- Judgment Day (Islam)3
- Judicial process (Islamic law)1
- Julius III, Pope, 1487-15553
- Jumʻah1
- Jurisprudence1
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Miṣbāḥ fī sharḥ al-Miftāḥ4