Former Owner
- Manookjee Sorabjee Ashburner1
- Manuel John Johnson1
- Marc-René de Voyer d'Argenson1
- Marcianus F. Rossi1
- Marie de Bretagne d'Avaugour1
- 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