Former Owner
- Marie Cleophe de Sollario1
- Marie Thomas1
- Marie de Albano1
- Marie-Caroline of Bourbon-Two Sicilies, Duchess of Berry1
- Marienstiftsgymnasium1
- Marino Grimani1
- Mario Maffei1
- Marion Lawrence1
- Mariota Lyle1
- Mark Lansburgh1
- Martin Breslauer1
- Martin Schøyen1
- Martinus Nijhoff1
- Mary Elizabeth Holte1
- Mary Lusher1
- Mary Stanley, Countess of Derby1
- Mary, Queen of Scots1
- Mathias Schurer1
- Matteo Barresi1
- Matthew Bloxam1