- Italy--Marsala1
- Italy--Milan1
- Italy--Pantelleria Island1
- Italy--Syracuse1
- Jerónima de la Asunción, madre, 1555-16301
- Jesuit drama, Spanish1
- Jesus Christ1
- Jiménez de Cisneros, Francisco, 1436?-15171
- Jiménez de Enciso family1
- Jiménez de Enciso, Andrés1
- Jiménez de Enciso, Diego1
- Jiménez de Enciso, Pedro1
- John II, King of Aragon, 1397-14791
- Juan II, King of Castile and Leon, 1405-14541
- Justa, Saint, -approximately 2871
- Justice, Administration of1
- Knights of Malta1
- Knowledge, Theory of1
- Ladron de Guevara family1
- Land titles--Registration and transfer1