- Limp bindings1
- Logic1
- Lombards1
- Lord's prayer1
- Luke, Saint1
- Magic--Religious aspects--Christianity1
- Manichaeism1
- Manuscript fragments1
- Manuscripts, English1
- Manuscripts, German1
- Manuscripts, Nahuatl1
- Manuscripts, Spanish1
- Martinus, Polonus, -12791
- Martyrs1
- Mary Magdalene, Saint1
- Massachusetts--Wellesley1
- Maximus, of Turin, Saint, active 4th century-5th century1
- Medea, consort of Aegeus, King of Athens (Mythological character)1
- Medicine, Medieval1
- Medicine--Formulae, receipts, prescriptions1