Former Owner
- Lathrop Colgate Harper1
- Laurence William Hodson1
- Leopold Gruber1
- Levi, David, active 19th century1
- 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
- Ludovico Settala1
- Luigi Celotti1
- Luis Fernández de Córdoba y Aragón1
- Luther Albertus Brewer1
- Lydia Thompson Morris1
- Lyon Cathedral1
- M. Haimmiller1
- M. Louise Stowell1
- Madeleine Cosman1
- Maggs Bros Ltd1