Ko Ngāti Toa ki Te Waipounamu tētahi o ngā hapū o Ngāti Toa (Ngāti Toarangatira). Ko Ngāti Toa tonu tētahi o ngā iwi o Tainui. E rua ngā rohe noho a Ngāti Toa; kei Waikato tētahi, kei Raukawa tētahi. He iwi tēnei kei ngā whenua e pātata ana ki Raukawa Moana i waenganui i te Te Ika-a-Māui me Te Wai-pounamu, Aotearoa, e noho ana. Ko Te Rauparaha te rangatira rongonui nō te wā i tae mai ai te Pākehā.