Former Owner
- Lancino Curti1
- Laurence William Hodson1
- Leonardo Bruni1
- Leopold Gruber1
- Lionardo di Paolo Adimari1
- Llewelyn Lloyd-Mostyn, 3rd Baron Mostyn of Mostyn1
- Louis César de La Baume Le Blanc1
- Malachia Ormanian1
- Mannucci family1
- Mario Maffei1
- Matteo Luigi Canonici1
- Matthias Corvinus1
- Mazliah Finzi1
- Michael Wodhull1
- Michel Chasles1
- Michel de Léon1
- Michele Amari1
- Monastero di Santo Spirito in Verona1
- Moritz Dessauer1
- Murray Anthony Potter1