Horonuku Te Heuheu Tukino IV (1821–1888), also known as Patātai (also spelt Patatai or Pataatai), was paramount chief of Ngāti Tūwharetoa, a Māori tribe of the central North Island of New Zealand.Horonuku's father Mananui Te Heuheu Tūkino II was a famous warrior who led the tribe successfully in many wars.Mananui allegedly stood well over two metres tall and was heavily built, and was not only a formidable warrior but also a fine military tactician.Horonuku succeeded him after his death in a landslide, but because he was at such a young age of 16, Mananui's brother, Iwikau Te Heuheu Tūkino III, was put in control of the iwi.Horonuku's sons included Tūreiti Te Heuheu Tūkino V, his successor as paramount chief of Ngāti Tūwharetoa.
Tongariro deed of gift between Horonuku Te Heuheu Tūkino IV of Ngāti Tūwharetoa and the Crown (1887)