- Italy--Rome1
- Italy--Tuscany1
- James, the Greater, Saint1
- Jewish illumination of books and manuscripts1
- Jews1
- Jews--Legal status, laws, etc.1
- John the Baptist's Day1
- John, Duke of Burgundy, 1371-14191
- Juana, of Austria, Princess of Portugal, 1535-1573--Correspondence1
- Judaism1
- Judaism--Customs and practices1
- Kekchi language1
- Kings and rulers--Duties1
- Knowledge, Theory of (Religion)1
- Kufic1
- Kyriales1
- Ladron de Guevara family1
- Lancelot (Legendary character)1
- Land titles--Registration and transfer1
- Lapidaries (Medieval literature)1