Former Owner
- Mannheimer Hofbibliothek1
- Manoel Pereira da Sylva1
- Manoel S. Pinto1
- Manookjee Sorabjee Ashburner1
- Manuel Fernández del Castillo3
- Manuel John Johnson1
- Manūchihr Nukhastīn Āṣaf Qājār1
- Marc-René de Voyer d'Argenson1
- Marcantonio Contarini1
- Marcantonio V Borghese1
- Marcela Gabriela1
- Marchese Linterno2
- Marchese Porri-Carcani1
- Marco da Bologna1
- Margaret F. Woodward1
- Margaret Le Seigneur1
- Margaret of Croy1
- Margareta van der Dycke1
- Margaretha van Cleyburg1
- Marguerite de Fontenay1