Former Owner
- Maggs Bros Ltd4
- Mahadevabhaṭṭa5
- Mahdī ibn Muṣṭafá al-Ḥusaynī1
- Maheśa1
- Mahārāja Aditya Bahadur Dinha8
- Manṣūr, Abū al-Faz̤l ibn Ghiyāth al-Dīn1
- Marchese Linterno1
- Margaret Anna Hazard1
- Margaret Barclay Wilson1
- Marie-Caroline of Bourbon-Two Sicilies, Duchess of Berry1
- Marino Grimani1
- Marāṭha, Raṅganātha1
- Matteo Luigi Canonici3
- Mauni, Bālaṃbhaṭa1
- Mayer Sulzberger16
- Milton Fischmann22
- Mistrie, Sita Ram, Pandit1
- Morton Scott Enslin1
- Moḍaka, Vināyaka1
- Muḥammad Bāqir1