Former Owner
- Michaeliskonvent1
- Michel Chasles1
- Michele Amari1
- Michiel family1
- Millard Meiss1
- Mobed Framji Fardunji Madan1
- Mobed Hormazdyar Mobed Khodabaksh1
- Mohammed bin Hamed bu Osman1
- Monasterio de El Paular1
- Moritz Dessauer1
- Moritz Joseph Johann von Dietrichstein1
- Morris H. Morgan1
- Morris Harold Saffron1
- Morton Parker Eden1
- Muriel Agnes Fry1
- Murray Anthony Potter1
- Mushtaq Ali Khan I of Rampur1
- Muḥammad Amīn al-Sabtī al-Alūsī Anṣārī1
- Muḥammad Amīn ʻAṭṭār1
- Muḥammad Bāqir Shīrāzī1