Former Owner
- Lionardo di Paolo Adimari1
- Lionel Tollemache, 4th Earl of Dysart1
- Louis César de La Baume Le Blanc1
- Louis Herbert Gray1
- Louis N. Cassett1
- Louis-Jean-Nicolas Monmerqué1
- Luther Albertus Brewer1
- Lydia Thompson Morris1
- Lyon Cathedral1
- M. Haimmiller1
- M. Louise Stowell1
- Madeleine Cosman1
- Malachia Ormanian1
- Malvezzi de' Medici1
- Manūchihr Nukhastīn Āṣaf Qājār1
- Maria Riddell1
- Mario Maffei1
- Markus Fugger1
- Mary Augusta Strachey1
- Mary Schell Collins1