Former Owner
- Laurent Campagne1
- LeMare1
- Legoué1
- Leicester Harmsworth1
- Leo Olschki1
- Lepeletier de Rosanbo1
- Library of the Dominicans of Paris1
- Lisa Norris Elkins1
- Long Island Historical Society, Maine1
- Louis César de La Baume Le Blanc1
- Louis II, Count of Flanders1
- Louis XII of France1
- Louis XIV of France1
- Louis d'Aumont de Rochebaron1
- Louis d'Harcourt1
- Luigi Arrigoni1
- Lundell Library1
- Lycée Louis-le-Grand1
- Lyon Cathedral1
- Léon Techener1