Former Owner
- Llewelyn Lloyd-Mostyn, 3rd Baron Mostyn of Mostyn1
- Louis Charles Elson6
- Louis Charles Karpinski1
- Louis César de La Baume Le Blanc1
- Louis H. Silver1
- Louis Loewe1
- Louis Lucien Bonaparte1
- Louis XII of France1
- Louis d'Harcourt1
- Lucien Delamarre1
- Luigi Celotti2
- Lycée Louis-le-Grand1
- Léon Techener1
- M. Lee1
- M. Pierre Guarin1
- Maggs Bros Ltd8
- Manūchihr Nukhastīn Āṣaf Qājār1
- Marco da Bologna1
- Marie-François Duchesne de Beaumanoir1
- Marion H. Gottfried1