Brigadier Duncan MacIntyre CMG DSO OBE ED PC (10 November 1915 – 8 June 2001) was a New Zealand politician of the National Party.

[1] He was the eldest of six children between Esther Mary Bell and the Scottish-born Archibald MacIntyre, a farmer near Bridge Pa.

[3] MacIntyre married Diana Grace Hunter, the daughter of a Hawke's Bay farming family on 10 January 1939 in Havelock North.

[4] In particular he was noted for leading a 'vigorous counter-attack' on the night of 17/18 April across the Gaiana River before climbing onto a knocked-out Sherman tank and used its machine gun to pin down enemy positions the following day.

[2][5][6] MacIntyre returned to New Zealand and resumed farming and joined the local branch of Federated Farmers.

He gained a reputation as capable and hardworking and was a strong advocate for diversifying forest planting as well as its applications on private land, seeing its potential to boost the incomes of farmers as well as providing employment and supporting the processing industry.

He would emphasise 'self-help' to Māori and urged iwi and hapū to develop their lands productively to avoid the risk of losing them.

[2] As Minister for the Environment he became unpopular during the Save Manapouri campaign and, just weeks out from an election, gazetted trout farming legislation which displeased anglers and conservationists.

[4][10] In September 1980 MacIntyre gave a Marginal Land Boards loan to his daughter and son-in-law raising questions around Conflict of interest.

Hamish resigned from National in 1991 in protest of the neo-liberal economic reforms being undertaken, subsequently jointly forming a new Liberal Party, which soon afterwards became part of the Alliance, but was defeated at the next election in 1993.

[1] Ngāti Kahungunu held him in such high regard for his conduct as Māori Affairs Minister that his body was at their Porangahau Marae for one night before the funeral.