Former Owner
- Marie-Caroline of Bourbon-Two Sicilies, Duchess of Berry1
- Marilyn Carbonell1
- Marino Grimani1
- Mario Pedro Arata1
- Marquis of Astorga1
- Mary Lusher1
- Marāṭha, Raṅganātha1
- Matthaeus Lupin1
- Matthew Donadski1
- Maximilian Henry of Bavaria1
- Maxwell Sommerville1
- Maḥmūd bin Nāṣir1
- Maḥmūd ibn al-Shaykh al-Fattāḥ1
- Melchior Daniel Neubronner1
- Menaḥem Naḥum, ha-Leṿi, mi-ḳ.ḳ. Dribin1
- Michael M. Zagayski1
- Michiel family1
- Miha'el Hayyim ben Yosef bar Ya'akov1
- Mikhail Golitsyn1
- Mobed Framji Fardunji Madan1