The Māori King movement, called the Kīngitanga in Māori, is a Māori movement that arose among some of the Māori iwi (tribes) of New Zealand in the central North Island in the 1850s, to establish a role similar in status to that of the monarchy of the United Kingdom as a way of halting the alienation of Māori land. The first Māori king, Pōtatau Te Wherowhero, was crowned in 1858. The monarchy is non-hereditary in principle, although every monarch since Pōtatau Te Wherowhero has been a child of the previous monarch. The eighth monarch is Nga wai hono i te po, who was elected and crowned in September 2024.
The Māori monarch operates in a non-constitutional capacity outside the New Zealand government, without explicit legal or judicial power. Reigning monarchs retain the position of paramount chief of several iwi, and wield some power over these, especially within Tainui. The influence of the Māori monarch is widespread in Māoridom despite the movement not being adhered to by several major iwi, notably Tūhoe, Ngāti Porou, and the largest of all, Ngāpuhi. The headquarters for the King movement is Tūrangawaewae Marae in the town of Ngāruawāhia.