 Roman Catholic Archdiocese of St. John's, Newfoundland

The Roman Catholic Archdiocese of St. John's, Newfoundland () is an archdiocese of the Roman Catholic Church based in St. John's, Newfoundland and Labrador, Canada.It is the Metropolitan see of the Ecclesiastical Province of St. John's, which also includes the suffragan dioceses of Grand Falls, and Corner Brook and Labrador.