- Lord's prayer1
- Magic--Religious aspects--Christianity1
- Manuscripts1
- Manuscripts, Arabic1
- Manuscripts, Digital1
- Manuscripts, English1
- Manuscripts, European1
- Manuscripts, German1
- Manuscripts, Nahuatl1
- Marginalia1
- Massachusetts--Wellesley1
- Maximus, of Turin, Saint, active 4th century-5th century1
- Medea, consort of Aegeus, King of Athens (Mythological character)1
- Medicine--Formulae, receipts, prescriptions1
- Michigan--Kalamazoo1
- Middle East--Jerusalem1
- Midrash1
- Miscellanea1
- Missals1
- Monasticism and religious orders1