- Marriage (Canon law)1
- Marriage (Canon law)--Dispensations1
- Marriage customs and rites1
- Marriage--Religious aspects--Islam1
- Marshals1
- Martellini, Vincenzio1
- Marucelli, Benedetto1
- Marucelli, Francesco, 1625-17031
- Masjid al-Ḥarām1
- Masnavis, Persian1
- Masorah1
- Massachusetts--Boston1
- Massachusetts--Northampton1
- Massaran, Isaac de1
- Mathematics1
- Mathematics, Arab1
- Mathematics--Study and teaching1
- Matthei, Bernardino1
- Mawḍūʻāt (Ibn al-Jawzī, Abū al-Faraj ʻAbd al-Raḥmān ibn ʻAlī)1
- Mawṣilī, Muḥammad ibn al-Ḥusayn, -1334 or 13351