- Italy--Lombardy1
- Italy--Mantua1
- Italy--Padua1
- Italy--Sicily1
- Italy--Siena1
- Italy--Venice1
- Italy--Verona1
- Izmīrī, Muṣṭafá ibn Rajab, active 17th century1
- James, the Greater, Saint1
- Japan1
- Japan--Fujimaki-mura1
- Jerónima de la Asunción, madre, 1555-16301
- John I, King of Portugal, 1357-14331
- Juana, of Austria, Princess of Portugal, 1535-15731
- Judgment Day (Islam)1
- Julius III, Pope, 1487-15551
- Karaite manuscripts1
- Karaitic literature1
- Kaʻbah (Mecca, Saudi Arabia)1
- Kemalpaşazade, 1468 or 1469-15341