Former Owner
- Llanthony Priory1
- Llewelyn Lloyd-Mostyn, 3rd Baron Mostyn of Mostyn2
- Lodi Cathedral1
- Lodovicus Saltariellus1
- Loftus Bland1
- Long Island Historical Society, Maine1
- Louis Bourguet1
- Louis César de La Baume Le Blanc3
- Louis II, Count of Flanders1
- Louis XII of France2
- Louis XIV of France1
- Louis d'Aumont de Rochebaron1
- Louis d'Harcourt1
- Louis-Jean-Nicolas Monmerqué1
- Lucien Delamarre1
- Lucien Graux1
- Lucien Magne1
- Ludovico Settala1
- Ludwig Rosenthal2
- Ludwig Rosenthal's Antiquariaat2