- Jewish religious poetry, Ladino1
- Jewish sermons, Italian1
- Jews--Legal status, laws, etc.1
- Jews--Medicine1
- Jews--Persecutions1
- John, the Apostle, Saint1
- John, the Baptist, Saint1
- Joseph (Son of Jacob)1
- Judaism--Controversial literature1
- Judaism--Prayers and devotions1
- Julii family1
- Julius III, Pope, 1487-15551
- Justinian I, Emperor of the East, 483?-5651
- Kingdom of God1
- Kings and rulers--Duties1
- Kirchmair, Georg, 1481-15541
- Knights of Malta1
- Language and languages1
- Language and languages--Philosophy1
- Last Supper1