Māori is an Austronesian language spoken in New Zealand, or Aotearoa ('The Land of the Long White Cloud'), and the Cook Islands by about 136,000 people. It was brought to New Zealand by Polynesian people, probably from Taihiti or thereabouts in about 800 AD, or possibly earlier.
Māori is most closely related to Tahitian, which is spoken in Tahiti and the Society Islands, and Rarotongan, which is spoken in the southern Cook Islands.
source
wikipedia.org,
omniglot.com &
ethnologue.com