- Maronite rite (Catholic Church)--Liturgy1
- Marriage (Islamic law)3
- Marriage--Religious aspects--Islam1
- Mary Magdalene, Saint2
- Mary, Blessed Virgin, Saint16
- Mary, Blessed Virgin, Saint, in the liturgy1
- Marāḥ al-arwāḥ (Ibn Masʻūd, Aḥmad ibn ʻAlī)1
- Masjid al-Aqṣá (Jerusalem)1
- Masorah1
- Mass10
- Massachusetts--Boston9
- Massachusetts--Northampton3
- Massachusetts--Wellesley6
- Mathematics, Arab4
- Mawlānāʹzādah, Aḥmad ibn Maḥmūd, active 14th century. Sharḥ Hidāyat al-ḥikmah1
- Maḥzor. Passover1
- Medicine, Arab5
- Medicine, Magic, mystic, and spagiric3
- Medicine, Persian2
- Meditations3