Ngatea (Māori: Ngātea) is a small town on the Hauraki Plains in the North Island of New Zealand. It is located 18 kilometres southwest of Thames and 70 kilometres southeast of Auckland. Ngatea lies on the Piako River, eight kilometres south of its outflow into the Firth of Thames. Ngatea is the 'service centre' for the farming area of the Hauraki Plains. It was established in the 1900s as a result of a unique series of canals and stop banks which drained the land and produced rich farmlands for dairy production.