Reginald John Delargey (10 December 1914 – 29 January 1979) was the Roman Catholic Bishop of Auckland, and later Cardinal, Archbishop of Wellington and Metropolitan of New Zealand.

After four years as Bishop of Auckland, and after the death of Cardinal Peter McKeefry he was translated to the Metropolitan See in Wellington and became its Archbishop on 25 April 1974.

Although not from Wellington, Delargey built a strong relationship with the people and clergy of the Archdiocese as a result of his openness, humility and sincerity.

As Archbishop he continued to promote the work of the Catholic Youth Movement – as he had previously done in Auckland – and was particularly conscious of the needs of minority groups both in the Archdiocese and throughout New Zealand.

Delargey was created Cardinal priest on 24 May 1976 by Pope Paul VI and received the title of Inmmacolata al Tiburtino.