Former Owner
- Malachia Ormanian1
- Malvezzi de' Medici1
- Manūchihr Nukhastīn Āṣaf Qājār1
- Mario Maffei1
- Mark Lansburgh1
- Markus Fugger1
- Marvin-L. Colker1
- Mary Augusta Strachey1
- Mary Schell Collins1
- Marāṭha, Raṅganātha1
- Mauni, Bālaṃbhaṭa1
- Maximilian Henry of Bavaria1
- Mazliah Finzi1
- Maḥmūd bin Nāṣir1
- Melk Abbey1
- Michel Chasles1
- Michel de Léon1
- Michele Amari1
- Mistrie, Sita Ram, Pandit1
- Monastero di Santo Spirito in Verona1