David Russell Lange ( LONG-ee; 4 August 1942 – 13 August 2005) was a New Zealand politician who served as the 32nd Prime Minister of New Zealand from 1984 to 1989. He was the country's youngest Prime Minister of the 20th century
Lange became the parliamentary leader of the Labour Party and Leader of the Opposition in 1983. The Fourth Labour Government came to power in July 1984 amid a constitutional crisis. It rapidly implemented far-reaching constitutional, economic and social reforms. However, the free market ethos of Lange's government did not conform to traditional expectations of a social-democratic party. Lange and his party were re-elected in August 1987; he resigned two years later and was succeeded by his deputy, Geoffrey Palmer. Lange had a reputation for cutting wit (sometimes directed against himself) and eloquence. Helen Clark described New Zealand's nuclear-free legislation as his legacy.
He is also known as David Russell Lange.