Former Owner
- Leo Olschki3
- Leonhardus Cuntius1
- Leopold Gruber1
- Levi, David, active 19th century1
- Lionardo di Paolo Adimari1
- Lionel Tollemache, 4th Earl of Dysart1
- Llanthony Priory1
- Lohanī, Viṣṇudatta1
- London School of Jewish Studies3
- Louis César de La Baume Le Blanc1
- Louis Lamm1
- Louis N. Cassett1
- Louis-Jean-Nicolas Monmerqué1
- Lucien Gougy2
- Ludovico Settala1
- Luigi Celotti1
- Luis Fernández de Córdoba y Aragón1
- Lyon Cathedral1
- Lālajī Śarmaṇ1
- M. Haimmiller1