Laudetur Jesus Christus or Laudetur Iesus Christus (Latin for Praised be Jesus Christ) is a traditional Roman Catholic greeting, which is commonly used among members of religious communities, especially of certain ethnic backgrounds. The answer to this greeting is typically "in saecula saeculorum! Amen" ("now and forever! Amen") or "(Nunc et) in aeternum! Amen" ("(Now and) forever! Amen"). The Missionary Oblates of Mary Immaculate, however, respond with "Et Maria Immaculata" ("And Mary Immaculate"). The phrase is also a motto of Vatican Radio.
The use of the greeting in traditional Catholicism is noted by Pius Parsch:
"The humanity of Christ is near in the priest. The Catholic people have kept this belief: 'Praised be Jesus Christ' they say whenever the priest comes."
The salutation is also commonly used by other Christian denominations, including Lutherans and other Protestants, as well as some Eastern Churches.