Former Owner
- Manoel Pereira da Sylva1
- Manuel John Johnson1
- Marcianus F. Rossi1
- Marilyn Carbonell1
- Mario Pedro Arata1
- Marquis of Astorga1
- Matthaeus Lupin1
- Maximilian Henry of Bavaria1
- Melchior Daniel Neubronner1
- Michael M. Zagayski1
- Michiel family1
- Milton Fischmann1
- Morris Jastrow, Jr.1
- Muhsinzâde Ömer Aǧa1
- Musa Kâzım Efendi1
- Muḥammad Amīn al-Sabtī al-Alūsī Anṣārī1
- Muḥammad Anīs Ṭālawī1
- Muḥammad ʻAwwād ibn Ḥusayn Afandī1
- New York Academy of Medicine1
- Nicholas N. Martinovitch1