Former Owner
- Lancino Curti1
- Leicester Harmsworth1
- Leonhardus Cuntius1
- Lionel Tollemache, 4th Earl of Dysart1
- Llanthony Priory1
- Louis-Jean-Nicolas Monmerqué1
- Lucrezio Palladio degli Olivi1
- Ludovico Settala1
- Luigi Celotti1
- Lyon Cathedral1
- M. Haimmiller1
- Malvezzi de' Medici1
- Margaret Anna Hazard1
- Mario Maffei1
- Mary Augusta Strachey1
- Mary Schell Collins1
- Matteo Barresi1
- Matteo Luigi Canonici1
- Michel Chasles1
- Michel de Léon1