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. In 2021 almost 40 per cent of New Zealand's 471,000 Catholics lived within the diocese of Auckland.
|1836-1842||Jean-Baptiste-François Pompallier (Vicar Apostolic of Western Oceania); see below||1802-1871|
|1842-1848||Jean-Baptiste-François Pompallier (Vicar Apostolic of New Zealand); see above & below|
|1848-1869||Jean-Baptiste-François Pompallier (1st Bishop of Auckland); see above|
|1879-1881||Walter Steins SJ, Archbishop (personal title)||1800-1881|
|1882-1896||John Luck OSB||1840-1896|
|1896-1910||George Lenihan OSB||1858-1910|
|1929-1970||James Liston, Archbishop (personal title) in 1953||1881-1976|
|1970-1974||Reginald John Delargey (future Cardinal)||1914-1979|
|1983-1994||Denis Browne||Born 1937|
|1994-2021||Patrick Dunn||Born 1950|
|2021-present||Stephen Lowe||Born 1962|
Delargey was appointed Archbishop of Wellington in 1974 (Cardinal in 1976).
Browne was appointed Bishop of Hamilton in New Zealand in 1994.