Hotunui was a Maori rangatira (chieftain) of the Tainui tribal confederation of Waikato, New Zealand. Through his son Marutūāhu he is the ancestor of four tribes of the Hauraki Gulf: Ngāti Maru, Ngāti Rongoū, Ngāti Tamaterā, and Ngāti Whanaunga. He probably lived in the latter half of the sixteenth century.