- Kings and rulers--Duties1
- Latin language1
- Latin language--Orthography and spelling1
- Latin language--Study and teaching1
- Legends1
- Literature1
- Logic1
- Logic, Medieval1
- Lord's Supper--Adoration1
- Lord's Supper--Catholic Church1
- Manuscripts, Armenian1
- Manuscripts, English (Middle)1
- Manuscripts, Greek (Medieval and modern)1
- Manuscripts, Judeo-Arabic1
- Manuscripts, Samaritan1
- Marriage1
- Mary, Blessed Virgin, Saint1
- Materia medica, Vegetable1
- Medea, consort of Aegeus, King of Athens (Mythological character)1
- Medical astrology1