- Mardāwī, ʻAlī ibn Sulaymān, 1414 or 1415-1480 or 1481. Tanqīḥ al-mushbiʻ fī taḥrīr aḥkām al-Muqniʻ1
- Margarita, de Austria, Queen, consort of Philip III, King of Spain, 1584-16111
- Marginalia2
- Marriage5
- Marriage customs and rites1
- Marriage--Religious aspects2
- Marriage--Religious aspects--Hinduism27
- Married women1
- Mars (Planet)1
- Martyrdom1
- Martyrologies1
- Martyrs2
- Mary, Blessed Virgin, Saint1
- Mary, Queen of Scots, 1542-15871
- Mashāriq al-anwār (Ṣaghānī, al-Ḥasan ibn Muḥammad)1
- Masnavis, Persian1
- Massachusetts--Boston29
- Massachusetts--Wellesley50
- Massachusetts--Williamstown7
- Materia medica2