The Roman Catholic Metropolitan Archdiocese of Port of Spain (Latin: Archidioecesis Metropolitae Portus Hispaniae) is a metropolitan diocese of the Latin Church of the Roman Catholic Church in the Caribbean.

The archdiocese is the Metropolitan responsible for the suffragan Dioceses of Bridgetown, Georgetown, Paramaribo and Willemstad, and is a member of the Antilles Episcopal Conference.

The diocese of Port of Spain was originally erected as a vicariate apostolic in 1818 and elevated to an archdiocese in April 1830.

The archdiocese has its own special-purpose company, Catholic Media Services Limited (CAMSEL), responsible for coordinating communications.

There is also a local TV station which operates under the aegis of the archdiocese but is independently owned and operated by the Living Water Community, a public association of Christian Faithful founded in Trinidad.