Radio New Zealand (Māori: Te Reo Irirangi o Aotearoa), commonly known as RNZ or Radio NZ, is a New Zealand public service broadcaster and Crown entity. Established under the Radio New Zealand Act 1995, it operates news and current affairs station, RNZ National, and a classical music and jazz station, RNZ Concert, with full government funding from NZ On Air. Since 2014, the organisation's focus has been to transform from a radio broadcaster to a multimedia outlet, increasing its production of digital content in audio, video, and written forms, utilising rnz.co.nz and the RNZ app.

The organisation plays a central role in New Zealand public broadcasting. The New Zealand Parliament fully funds its AM network, used in part for the broadcast of parliamentary proceedings. RNZ has a statutory role under the Civil Defence Emergency Management Act 2002 to act as a "lifeline utility" in emergencies. It is also responsible for an international service, RNZ Pacific, which broadcasts to the South Pacific in both English and Pacific languages through its shortwave service, and publishes online news in Simplified Chinese.

The first radio broadcast in New Zealand was made on 17 November 1921 by radio pioneer Professor Robert Jack. Government-funded public service radio in New Zealand was historically provided by the Radio Broadcasting Company between 1925 and 1931, the New Zealand Broadcasting Board between 1931 and 1936, the National Broadcasting Service between 1936 and 1962, the New Zealand Broadcasting Corporation between 1962 and 1975, and the Radio New Zealand state-owned enterprise between 1975 and 1995. The organisation placed a strong emphasis on training its staff in Received Pronunciation, until it began promoting local and indigenous accents in the 1990s.

As part of the process of privatisation carried out by the fourth National government, the government's commercial radio operations were sold to private investors as The Radio Network in 1996, and the government's non-commercial assets (known previously as New Zealand Public Radio) became the current Radio New Zealand Crown entity.

RNZ had its headquarters in Broadcasting House in Bowen St, Wellington, behind the parliamentary buildings. Construction of the Bowen St building began in 1959, and it was opened in 1963. The building was demolished in 1997, and RNZ moved to Radio New Zealand House on The Terrace. In 2025 a time capsule which had been buried in the tunnel between the RNZ building and Parliament Buildings in 1996 was discovered and opened.

The broadcaster is bound by the Charter and Operating Principles included in the Radio New Zealand Act, which is reviewed by the New Zealand Parliament every five years. The Radio New Zealand Amendment Act 2016 received Royal assent on 1 April 2016.

Purpose:

RNZ broadcasts over three nationwide networks: RNZ National; RNZ Concert; and the AM network, which relays Parliamentary proceedings. RNZ Pacific (formerly Radio New Zealand International or RNZI) is its overseas shortwave service, broadcasting to the South Pacific and beyond, while Radio New Zealand News provides comprehensive, up-to-the-minute news and current affairs information. RNZ also allows for the archiving of broadcast material of historical interest.