New Zealand has three official languages Sign Language, Māori, and English.

English is the most popular language spoken in New Zealand. However, people have the right to speak Māori and New Zealand Sign Language in any legal proceedings.

Although English is the most spoken it wasn't recognized as an official language until 2018. Māori however, has been recognized as an official language since 1987, and Sign Language since 2006.

Approximately 25,000 people can use Sign Language on a daily basis, and is the main language for the New Zealand Deaf Community, which was created by the deaf people, for the deaf people and has signs for both English and Māori words. The purpose of making Sign Language an official language was to ensure the deaf community had the same access to government information and services as everybody else.

More Info: en.wikipedia.org