Former Owner
- Monsieur de Bel Air1
- Morton Davis Mitchell1
- Mrs. F. W. Bartlett1
- Mrs. Turnbull1
- Muriel Agnes Fry1
- Murray Anthony Potter1
- Museo Cavaleri1
- Muḥammad Nāṣir al-Dawlah1
- Muḥammad al-Raʼīs1
- Muḥammad ʻAbd al-Ḥayy ibn ʻAbd al-Kabīr al-Kinānī al-Ḥasanī1
- Muḥammad ʻAbduh1
- Muḥammad Ṣābir1
- Muṣṭafá Shāh ʻAlāʼī1
- N. Pauli1
- Nasir al-Din al-Tusi1
- Nathaniel Castleton Stephen Poyntz1
- Nathaniel G. Snelling1
- Neuwerk Nunnery1
- Niccolò Albergati1
- Nicholas Bacon1