- Longevity--Religious aspects--Islam1
- Lord's Supper--Adoration1
- Lord's Supper--Catholic Church1
- Lord's Supper--Catholic Church--History of doctrines1
- Lorraine, Nicolas-François, duc de, 1609-16701
- Love in literature1
- Love poetry, English (Middle)1
- Love poetry, French1
- Love poetry, Latin1
- Love songs1
- Low German language1
- Lucayan Indians1
- Ludwig IV, Holy Roman Emperor, 1282?-13471
- Lunar eclipses1
- Lute music1
- Luxembourg1
- Luxeuil1
- Lydgate, John, 1370?-1451?1
- Lāmīyat al-ʻArab (Shanfará)1
- Maccabees1