The Māori language is known as te reo Māori or simply te reo (the language). It is the language of the Māori people of New Zealand. Te reo Māori is an official language in New Zealand, along with English and New Zealand Sign Language. It was made official in 1987.
This clip from Te Karere highlights the passing of the Maori Language Act 1987. The item notes that there were three main parts of the act: to make te reo Māori an official language, to allow te reo to be used in legal proceedings and to establish the Māori Language Commission (Te Taura Whiri i te Reo Māori) to advocate for te reo. Minister for Māori Affairs Koro Wetere notes that the chiefly language from the ancestors, te reo Māori, has had its mana recognised with New Zealand.