The Fourth Labour Government of New Zealand governed New Zealand from 26 July 1984 to 2 November 1990. It was the first Labour government to win a second consecutive term since the First Labour Government of 1935 to 1949. The policy agenda of the Fourth Labour Government differed significantly from that of previous Labour governments: it enacted major social reforms and economic reforms.

The New Zealand Labour Party, also known simply as Labour, is a centre-left political party in New Zealand. The party's platform programme describes its founding principle as democratic socialism, while observers describe Labour as social-democratic and pragmatic in practice. The party participates in the international Progressive Alliance. It is one of two major political parties in New Zealand, alongside its traditional rival, the National Party.