First usage of the stratigraphic term Te Kuiti is reviewed, with special considerationof restrictions in its use and of the upper limit of its application. Adoption of the name “Te Kuiti Group” is supported, and a revised definition proposed. Stratigraphical, columns are presented covering an area from Papakura to Taumarunui. The constituent formations of the group are described, their type localities are recorded, and the following new formations are introduced: Mangakotuku Siltstone, Glen Massey Formation (including Elgood Limestone, Dunphail Siltstone, and Glen Massey Sandstone members), Waitetuna Limestone Member of the Aotea Sandstone, Te Akatea Siltstone, Orahiri Limestone, Otorohanga Limestone, and Mangapehi Sandstone.