Former Owner
- Marie de Bretagne d'Avaugour1
- Marie-François Duchesne de Beaumanoir1
- Marilyn Carbonell1
- Marion Lawrence1
- Mary Elizabeth Holte1
- Mary Schell Collins1
- Mary W. T. Dickinson1
- Matteo Luigi Canonici1
- Michael Greenberg1
- Michael Tomkinson1
- Michel Guibé1
- Miha'el Hayyim ben Yosef bar Ya'akov1
- Milton Fischmann6
- Miriam Lutcher Stark2
- Moissac Abbey1
- Morot1
- Nancy McGrath2
- New York Academy of Medicine1
- Nicholas B. Scheetz1
- Nicholas Chevalier1