Taumarunui is a small town in the King Country of the central North Island of New Zealand. It is on an alluvial plain set within rugged terrain on the upper reaches of the Whanganui River, 65 km south of Te Kūiti and 55 km west of Tūrangi. It is under the jurisdiction of Ruapehu District and Manawatū-Whanganui region. It has a population of 4,800 as of June 2023, and is the largest centre for a considerable distance in any direction.