Former Owner
- Long Island Historical Society, Maine1
- Louis Charles Elson12
- Louis César de La Baume Le Blanc2
- Louis H. Silver1
- Louis XIV of France1
- Lucien Graux1
- Lucien Magne1
- Luigi Celotti1
- Luigi Serra di Cassano1
- Lyon Cathedral1
- Léon Techener1
- Mademoiselle de Malberghe1
- Maffeo Pinelli1
- Maggs Bros Ltd21
- Manuel John Johnson1
- Margaret F. Woodward1
- Margaret of Croy1
- Marguerite de Fontenay1
- Marie Ange-Toussaint Placide de Ferron1
- Mark Lansburgh1