Apostolic Vicariate of Western Oceania

The Roman Catholic Diocese of Auckland is a Latin Rite diocese of the Catholic Church in Auckland, New Zealand. It was one of two dioceses in the country that were established on 20 June, 1848. Auckland became a suffragan diocese of the Roman Catholic Archdiocese of Wellington in 1887. A large area of the diocese south of Auckland was split from the diocese on 6 March 1980 to form the Roman Catholic Diocese of Hamilton, New Zealand.