Former Owner
- Marino Grimani1
- Mariota Lyle1
- Mark Sittich von Hohenems Altemps1
- Mary W. T. Dickinson1
- Maurice Johnson1
- Maḥmūd al-Ustādār, d. 1396 or 71
- Maḥmūd bin Nāṣir1
- Maḥmūd ibn al-Shaykh al-Fattāḥ1
- Michael Krupp1
- Michel Guibé1
- Michele Cavaleri1
- Minnis, Katherine1
- Mitchell Starrett Buck1
- Mobed Framji Fardunji Madan1
- Mobed Hormazdyar Mobed Khodabaksh1
- Mohammed bin Hamed bu Osman1
- Monsieur de Bel Air1
- Morris Harold Saffron1
- Morton Parker Eden1
- Moses Shapira1