- Italy--Bologna1
- Italy--Bologna (Province)1
- Italy--Minerbio1
- Italy--Naples1
- Italy--Pozzuolo del Friuli1
- Italy--Rome1
- Italy--Treviso1
- Italy--Tuscany1
- James, the Greater, Saint1
- Jerónima de la Asunción, madre, 1555-16301
- Jesuits1
- Jews1
- Jiménez de Cisneros, Francisco, 1436?-15171
- John II, King of Aragon, 1397-14791
- John IV, King of Portugal, 1604-16561
- John Manuel, Prince of Portugal, 1537-15541
- John V, King of Portugal, 1689-17501
- Knights of Malta1
- Lafões, Pedro Henrique de Bragança, Duque de, 1718-17611
- Land titles1