Former Owner
- Lisa Norris Elkins1
- Loftus Bland1
- Lorenzo de Olivera1
- Louis Charles Elson1
- Louis-Jean-Nicolas Monmerqué1
- Ludwig Rosenthal1
- Luigi Serra di Cassano1
- Madame Théophile Belin1
- Madeleine Cosman1
- Malvezzi de' Medici1
- Manoel S. Pinto1
- Manuel Fernández del Castillo1
- Marianne F. ???1
- Marilyn Carbonell1
- Mark Augspürger1
- Mark Lansburgh1
- Mark Sittich von Hohenems Altemps1
- Markus Fugger1
- Marsden J. Perry1
- Martin Picker1