Former Owner
- Mary Stanley, Countess of Derby1
- Mary Talbot, Countess of Shrewsbury1
- Mary W. T. Dickinson11
- Mary, Queen of Scots1
- Matteo Luigi Canonici7
- Matthaeus Lupin1
- Matthew Bloxam1
- Maurice Johnson1
- Maḥmūd ibn al-Shaykh al-Fattāḥ1
- Melchior Daniel Neubronner1
- Melk Abbey1
- Michael Tomkinson1
- Miguel de Mayora1
- Miha'el Hayyim ben Yosef bar Ya'akov1
- Milt Freudenheim1
- Milton Fischmann27
- Mitchell Starrett Buck1
- Mobed Framji Fardunji Madan1
- Mobed Hormazdyar Mobed Khodabaksh1
- Mohammed bin Hamed bu Osman1