Former Owner
- Moissac Abbey1
- Monasterio de El Paular1
- Monastery at San Gregorio al Celio1
- Morris Harold Saffron1
- Mortimer Loeb Schiff1
- Morton Parker Eden1
- Muhammed Ali Khan Wallajah1
- Mullā ʻAbbās Zīvarī1
- Mushtaq Ali Khan I of Rampur1
- Muḥammad Amīn ʻAṭṭār1
- Muḥammad Bāqir1
- Muḥammad Bāqir Shīrāzī1
- Muḥammad Darvīsh Nūr al-Dīn Sunbulī2
- Muḥammad Ghazlāwī1
- Muḥammad Jaʻfar1
- Muḥammad Riḍā ibn ʻAbd Allāh1
- Muḥammad Sabzavārī1
- Muḥammad Shams al-Dīn Naqshband Nūrī1
- Muḥammad ibn ʻAlī ibn al-Sanūsī1
- Muḥammad ʻAwwād ibn Ḥusayn Afandī1