Catholic Church in Saint Lucia

The Roman Catholic Church in St. Lucia is part of the worldwide Roman Catholic Church, under the spiritual leadership of the Pope and the curia in Rome. Roman Catholics form roughly a two-thirds majority (61.5%) of the island's population of 163,362 (2004). The entire country comprises a single diocese, the Archdiocese of Castries.

Saint Lucia is a member of the Antilles Episcopal Conference and shares a single apostolic nuncio with the other nations that are part of the episcopal conference.