- Jewish law1
- Jewish magic1
- Jewish marriage customs and rites1
- Jewish philosophy1
- Jewish religious poetry, Hebrew1
- Jewish sermons, Italian1
- Jews, Italian1
- Jews--Persecutions1
- John, the Apostle, Saint1
- John, the Baptist, Saint1
- Joseph (Son of Jacob) in the Qurʼan1
- Judaism--Prayers and devotions1
- Judeo-Arabic language1
- Judeo-Italian language1
- Judgment Day1
- Jugurthine War (111-105 B.C.)1
- Julius III, Pope, 1487-15551
- Jābir ibn Ḥayyān1
- Jāmiʻ al-ṣaḥīḥ (Bukhārī, Muḥammad ibn Ismāʻīl)1
- Kings and rulers--Heraldry1