- Lord's Supper--Catholic Church--History of doctrines1
- Lord's prayer1
- Lorenzo, Betto di1
- Lorenzo, Giovanni Battista di1
- Lorenzo, Guidone di1
- Lorenzo, Lello di1
- Lorenzo, Vanna di1
- Lotti, Piero1
- Louis XII, King of France, 1462-15151
- Love poetry, Latin (Medieval and modern)1
- Luca, Jacopo di2
- Lucan, 39-651
- Lucayan Indians1
- Ludovico Sforza, Duke of Milan, 1452-15081
- Ludwig IV, Holy Roman Emperor, 1282?-13471
- Lunar eclipses1
- Lupi, Mea1
- Luther, Martin, 1483-15461
- Lutheran Church1
- Luti, Lutoccio1