- Marriage--Religious aspects--Islam1
- Martellini, Vincenzio1
- Marucelli, Benedetto1
- Marucelli, Francesco, 1625-17031
- Mary, Blessed Virgin, Saint1
- Mary, Queen of Scots, 1542-15871
- Mashāriq al-anwār (Ṣaghānī, al-Ḥasan ibn Muḥammad)1
- Massachusetts--Northampton1
- Massaran, Isaac de1
- Mathematics1
- Mathematics, Arab1
- Mathematics--Study and teaching1
- Matthei, Bernardino1
- Maḥbūbī, Maḥmūd ibn ʻUbayd Allāh, -1344 or 1345. Wiqāyat al-riwāyah fī masāʼil al-Hidāyah1
- Maṣābīḥ al-sunnah (Baghawī, al-Ḥusayn ibn Masʻūd)1
- Medici, Alamanno de'1
- Medici, Bastiano de'1
- Medici, Bernardo d'Alamanno de'1
- Medici, Bernardo de'1
- Medici, Carlo Bernardo Alamanni de'1