The Fifth Labour Government of New Zealand was the government of New Zealand from 10 December 1999 to 19 November 2008. Labour Party leader Helen Clark negotiated a coalition with Jim Anderton, leader of the Alliance Party. While undertaking a number of substantial reforms, it was not particularly radical compared to previous Labour governments.

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.