Former Owner
- Marymount College, Tarrytown2
- Matteo Luigi Canonici1
- Michael Greenberg1
- Michael Tomkinson1
- Michel Chasles1
- 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. Scheetz2
- Nicholas Chevalier1
- Nicholas Herry1
- Nicolas Rauch1
- Norman H. Strouse1
- Notre-Dame de Macourt monastery1
- Noël Pinelli1