Manunui (Māori manu nui or "big bird") is a small Whanganui River settlement, about 6 kilometres (3.7 mi) east of Taumarunui on State Highway 4, in New Zealand's King Country. It was once known as Waimarino, but John Burnand of the Ellis and Burnand sawmilling firm renamed it Manunui around 1905.
Ellis and Burnand opened a sawmill in Manunui in 1901, specialising in milling kahikatea to make boxes of its odourless wood for the butter export industry. After the North Island Main Trunk Railway reached the settlement in 1903, the mill grew to be the largest in the region. It closed in 1942.
Manunui became a manufacturing and farming centre as the native forest around it was milled and cleared. At one point it was a town district (requiring a population of at least 500), but merged back with Taumarunui county in the late 1970s; today is functionally a suburb of Taumarunui.
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