Laity
Lapsed Catholic — a Catholic who has ceased practising the Catholic faith.
Latin Church
Latin liturgical rites
Law, canon — see: Canon law
Lay communion — the status of a cleric who is in communion with the Church, but only with the standing of a lay person.
Lay ecclesial ministry
Lectio Divina
Lectionary
Lector — see: Reader
Limbo — an idea of speculative theology about the afterlife condition of those unbaptized who die in Original Sin rather than assigning them to the Hell of the damned. Limbo is not a formally defined doctrine of the Catholic Church
Latria — worship and prayer owed to God alone
Liturgy — public worship
Local ordinary