Former Owner
- Marchese Linterno1
- Marchese Porri-Carcani1
- Marcianus F. Rossi1
- Maria Ludovica Favia del Core Borromeo1
- Marie Cleophe de Sollario1
- Marie de Albano1
- Marie-Caroline of Bourbon-Two Sicilies, Duchess of Berry1
- Marie-François Duchesne de Beaumanoir1
- Marino Grimani1
- Martin Breslauer1
- Martin Schøyen2
- Mary Lacaita1
- Mary W. T. Dickinson3
- Mathias Schurer1
- Matteo Luigi Canonici5
- Matthias Corvinus1
- Maurice Kann1
- Maurilio Morazio1
- Mayfair Rare Books and Manuscripts1
- Menaḥem Naḥum, ha-Leṿi, mi-ḳ.ḳ. Dribin1