- Lilium medicinae (Bernard, de Gordon)1
- Lion hunting1
- Lippomano, Luigi, 1500-15591
- Little office of the Blessed Virgin Mary (Catholic Church)1
- Liturgical lessons1
- Liturgics--Calendar1
- Local government--Law and legislation1
- Local history1
- Local history--Sources1
- Local officials and employees1
- Logic, Ancient1
- Lombards1
- Lord's Supper--Catholic Church1
- Lord's Supper--Catholic Church--History of doctrines1
- Lorenzo, Betto di1
- Lorenzo, Giovanni Battista di1
- Lorenzo, Guidone di1
- Lorenzo, Lello di1
- Lorenzo, Vanna di1
- Lorraine, Nicolas-François, duc de, 1609-16701