Former Owner
- Lorenzo Berdute1
- Louis César de La Baume Le Blanc1
- Louis Hercule Timoléon de Cossé-Brissac1
- Louis-Jean-Nicolas Monmerqué1
- Ludovico Settala1
- Luini, Pacifico (Franciscan priest), active 19th century1
- Luis Escobet1
- Luis Fernández de Córdoba y Aragón1
- Madeleine Cosman1
- Maggs Bros Ltd1
- Malachia Ormanian1
- Malvezzi de' Medici1
- Mannucci family1
- Manūchihr Nukhastīn Āṣaf Qājār1
- Marcianus F. Rossi1
- Mario Maffei1
- Mark Augspürger1
- Mark Lansburgh1
- Markus Fugger1
- Mary Augusta Strachey1