Wainuiomata

Wainuiomata () is a large dormitory suburb of Lower Hutt, in the Wellington metropolitan area in New Zealand. Its population was estimated as being 20,450 as of June 2025, with a density of 1,600 people per km2. European settlement of Wainuiomata began in the 1850s with timber-felling and farming and began to grow in the 1920s. After World War 2 there was rapid population expansion, with Wainuiomata earning the nickname 'Nappy Valley' because of the large number of families with young children. From the late 1980s the economy slowed and the population decreased, but since about 2020 there has been a housing boom and corresponding increase in population. Wainuiomata is noted for being the origin of New Zealand's kōhanga reo (Māori-language immersion preschool) movement.

Origin of name

The word 'Wainui-o-mata' is a Māori name made up of the words Wai = water, Nui = big, O = of, and Mata – which could refer to a woman's name. The origins of the word are disputed, but one commonly accepted translation refers to the women who came over the Wainuiomata Hill to evade marauding tribes from the north, and who sat wailing by the stream after the slaughter of their menfolk. From this we have 'faces streaming with water' or 'tears' although it could equally refer to the large pools of water which lay over the swampy surface (face) of the northern end of the Valley, or the river itself which is known to flood the Wainui (Coast Road) valley.

The town is often abbreviated to Wainui by locals.