Iwi (Māori pronunciation: [ˈiwi]) are the largest social units in New Zealand Māori society. In Māori, iwi roughly means 'people' or 'nation',[1][2] and is often translated as "tribe",[3] or "a confederation of tribes". The word is both singular and plural in the Māori language, and is typically pluralised as such in English.
Iwi groups trace their ancestry to the original Polynesian migrants who, according to tradition, arrived from Hawaiki. Some iwi cluster into larger groupings that are based on whakapapa (genealogical tradition) and known as waka (literally 'canoes', with reference to the original migration voyages). These super-groupings are generally symbolic rather than logistical. In pre-European times, most Māori were allied to relatively small groups in the form of hapū ('sub-tribes')[4] and whānau ('family').[5] Each iwi contains a number of hapū; among the hapū of the Ngāti Whātua iwi, for example, are Te Uri-o-Hau, Te Roroa, Te Taoū, and Ngāti Whātua-o-Ōrākei. Māori use the word rohe to describe the territory or boundaries of iwi.[6]
In modern-day New Zealand, iwi can exercise significant political power in the management of land and of other assets. For example, the 1997 Treaty of Waitangi settlement between the New Zealand Government and Ngāi Tahu, compensated that iwi for various losses of the rights guaranteed under the Treaty of Waitangi of 1840. As of 2019[update] the tribe has collective assets under management of $1.85 billion.[7] Iwi affairs can have a real impact on New Zealand politics and society. A 2004 attempt by some iwi to test in court their ownership of the seabed and foreshore areas polarised public opinion (see New Zealand foreshore and seabed controversy).