- Martini, Roberto2
- Mary, Blessed Virgin, Saint, in the liturgy2
- Mashāʻir (Ṣadr al-Dīn Shīrāzī, Muḥammad ibn Ibrāhīm)2
- Matsliaḥ, ha-Kohen, 12th century2
- Maurice, Saint, -approximately 2872
- Mawlid al-Nabī2
- Mawrid al-ẓamʼān (Kharrāz, Muḥammad ibn Muḥammad)2
- Maḥallī, Jalāl al-Dīn Muḥammad ibn Aḥmad, 1389-1459. Kanz al-rāghibīn sharḥ Minhāj al-ṭālibīn2
- Maḥbūbī, ʻUbayd Allāh ibn Masʻūd, d. 1346 or 7. Muqaddimāt al-arbaʻ2
- Maḥzor. Passover2
- Medea, consort of Aegeus, King of Athens (Mythological character)2
- Medical education2
- Medici, Bernardo d'Alamanno de'2
- Medici, Giovanni de'2
- Medici, Luisa de'2
- Medicine--Practice2
- Mekhilta of Rabbi Ishmael2
- Menologion (Orthodox Eastern Church)2
- Menstruation--Religious aspects--Islam2
- Messiah--Judaism2