- Jugurthine War (111-105 B.C.)1
- Julius III, Pope, 1487-15551
- Jābir ibn Ḥayyān1
- Kings and rulers--Duties1
- Kings and rulers--Heraldry1
- Kirchmair, Georg, 1481-15541
- Knights of Malta1
- Knowledge, Theory of1
- Kölner Dom1
- Ladino language1
- Land titles--Registration and transfer1
- Lang, Matthäus, 1468-15401
- Latin America1
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- Lefèvre d'Étaples, Jacques, -15361