Former Owner
- Maḥmūd bin Nāṣir1
- Maḥmūd ibn al-Shaykh al-Fattāḥ1
- Medingen Abbey1
- Melchior Daniel Neubronner1
- Menno Hertzberger1
- Michael Bernays1
- Michael Greenberg1
- Milton Fischmann2
- Miriam Lutcher Stark1
- Miss Gostling1
- Mistrie, Sita Ram, Pandit1
- Mitchell Starrett Buck1
- Mobed Framji Fardunji Madan1
- Mobed Hormazdyar Mobed Khodabaksh1
- Mohammed bin Hamed bu Osman1
- Monastero di Santo Spirito in Verona1
- Monastery at San Gregorio al Celio1
- Monteles, Avraham de1
- Monteles, Yosef de1
- Morell Thurston1