Tieng Maori hay Maori ()  (phat am tieng Maori: [ˈmaːɔɾi] )  la mot ngon ngu Đong Polynesia đuoc noi boi nguoi Maori, toc nguoi ban đia cua New Zealand. Tu nam 1987, no đa tro thanh mot trong cac ngon ngu chinh thuc cua New Zealand. Ngon ngu nay lien quan chat che voi tieng Maori quan đao Cook, Tuamotu, va Tahiti.
Theo mot khao sat nam 2001 ve tinh trang cua tieng Maori, so luong nguoi truong thanh noi thong thao tieng Maori vao khoang 9% dan so Maori, tuc 30.000 nguoi. Đieu tra dan so nam 2006 cho thay rang 4% dan so New Zealand, tuong đuong 23,7% dan so Maori co the đoi thoai ve nhung viec hang ngay bang tieng Maori.


Ten Ten ngon ngu la mot tu noi danh (endonym), đanh van chinh xac la "Maori". Tai New Zealand, tieng Maori thuong đuoc goi la Te Reo [tɛ ˈɾɛ.ɔ] "ngon ngu", rut ngan tu te reo Maori.
Cac viet "Maori" (thieu macron) đuoc xem la chuan trong tieng Anh ngoai New Zealand ca ve tong the va ve mat ngon ngu. Cach viet "Maori" (voi macron) đa tro nen pho bien hon trong tieng Anh New Zealand nhung nam gan đay, đac biet trong cac chu đe lien quan đen van hoa Maori, du cach viet kia van de bat gap trong truyen thong đai chung hay hoat đong chinh phu.
Cac phat am tieng Anh tu "Maori" khac biet theo tu đien, trong đo  hien thuong đuoc dung nhat, , , va  cung hien dien. Cac phat am  xuat hien trong loi noi hang ngay, nhat la o Hoa Ky, nhung bi xem la sai.


Tinh trang New Zealand co ba ngon ngu chinh thuc – tieng Anh, tieng Maori va ngon ngu ky hieu New Zealand. Tieng Maori đat đuoc đia vi nay nho Đao luat Tieng Maori 1987. Đa phan co quan chinh phu co ten song ngu, va nhung noi nhu tru so chinh phu đia hay thu vien cong cong co bien hieu song ngu. Buu chinh New Zealand cong nhan nhung đia điem ten Maori tren đia chi buu pham. Nhieu khi New Zealand đuoc goi bang ten Maori "Aotearoa", nghia la 'đam may trang dai', du ten nay ban đau chi danh cho đao Bac.


Phan loai Nhung nha ngon ngu hoc phan loai tieng Maori nhu mot ngon ngu Polynesia; chinh xac hon la mot ngon ngu Đong Polynesia thuoc phan nhom Tahiti (ngoai tieng Maori con co tieng Maori quan đao Cook, su dung tai mien nam quan đao Cook, va tieng Tahiti, su dung tai Tahiti va quan đao Societe). Mot so ngon ngu Đong Polynesia khac la tieng Hawaii, tieng Marquesan (hai ngon ngu cua phan nhom Marquesan), va tieng Rapa Nui cua đao Phuc Sinh. Du tat ca ngon ngu ke tren đeu khac biet nhau, chung van đu giong nhau đe Tupaia, mot nguoi Tahiti đi cung Thuyen truong James Cook tu 1769–1770, giao tiep hieu qua voi nguoi Maori. Nguoi Maori hien đai ghi nhan rang ho thay nhung ngon ngu tai quan đao Cook de hieu va de dang trong giao tiep nhat. 


Phan bo đia ly Gan nhu tat ca nguoi noi la nguoi Maori đinh cu tai New Zealand. Uoc tinh luong nguoi noi khong nhat quan: đieu tra 1996 ghi nhan 160.000 nguoi, trong khi mot uoc tinh khac cua Uy ban Tieng Maori chi ghi nhan 10.000 nguoi truong thanh noi thanh thao (1995). Theo đieu tra 2006, 131.613 nguoi Maori (23.7%) "toi thieu co the đoi thoai ve nhung viec hang ngay bang te reo Maori". Luong nguoi nay tuong đuong 4,2% dan so New Zealand.
Nang luc ngon ngu cua nguoi tu nhan biet noi Maori bien thien tu toi thieu đen hoan thien. Cac thong ke khong xac đinh đuoc nang luc ngon ngu cua nguoi noi. Chi mot luong nho nguoi noi dung tieng Maori nhu ngon ngu chinh tai nha. Phan con lai chi dung vai tu hay cau (song ngu thu đong).
Đay van la ngon ngu giao tiep o mot so điem dan cu đong nguoi Maori tai Northland, Urewera va East Cape.
Ti le nguoi noi Maori trong cong đong Maori ngoai quoc thap hon nhieu tai New Zealand. Tai lieu thong ke cua Uc cho thay tieng Maori la ngon ngu tai gia cua 5.504 nguoi (2001), hay 7,5% cong đong nguoi Maori tai Uc. Tuy nhien, con so nay đa tang len đen 32,5% neu so voi nam 1996.


Phep chinh ta Bang chu cai Maori hien đai co 20 ky tu, hai trong so đo la phu am kep: A A E E H I I K M N O O P R T U U W NG va WH. Nhung no luc tim cach viet tieng Maori bang bang chu cai Latinh đa bat đau tu khi thuyen truong James Cook va nhung nguoi khai pha đen New Zealand. Viec ky am phu am đa gay ra khong it kho khan. Anne Salmond đa ghi nhan nhung cach viet cu, gom aghee thay vi aki (1773, tu Bo Đong Đao Bac, p. 98), Toogee va E tanga roak thay vi Tuki va Tangaroa (1793, Northland, p216), Kokramea, Kakramea thay vi Kakaramea (1801, Hauraki, p261), toges cho toki(s), Wannugu cho Uenuku va gumera cho kumara (1801, Hauraki, p261, p266, p269), Weygate cho Waikato (1801, Hauraki, p277), Bunga Bunga cho pungapunga, tubua cho tupua va gure cho kuri (1801, Hauraki, p279), cung nhu Tabooha cho Te Puhi (1823, Northern Northland, p385).
Tu 1814, cac nha truyen giao đa co xac đinh ro ngu am cua ngon ngu nay. Thomas Kendall phat hanh mot quyen sach nam 1815, tua A korao no New Zealand, ma trong chinh ta hien đai phai la He Korero no Aotearoa. Giao su Samuel Lee, đa cung toc truong Hongi Hika va Waikato (mot ho hang cua Hongi) lap phep chinh ta xac đinh dua tren phuong ngu mien Bac nam 1820. Phep chinh ta cua Lee hien tiep tuc đuoc dung, voi chi hai thay đoi lon: them wh đe phan biet am vi xat đoi moi vo thanh voi am vi moi-vom mem /w/; va viec su dung dau macron đoi voi moi nguyen am dai. Dau macron đuoc chap nhan đe the hien nguyen am dai (hangi), nhung nguyen am đoi cung đuoc dung (haangi).


= Nguyen am dai =
Nhung vi du duoi cho thay su thay đoi đo dai nguyen am co the lam bien đoi nghia cua tu trong tieng Maori:

ata 'buoi sang', ata 'mot cach can than'
mana 'uy tin', mana 'cho anh/co ta'
manu 'chim', manu 'tha troi'
tatari 'đoi cho', tatari 'loc hay phan tich'
wahine 'nguoi phu nu', wahine 'nhung nguoi phu nu'


Tham khao Lien ket ngoai Tieng Anh

Maori Language Act 1987 Luu tru ngay 26 thang 5 nam 2012 tai archive.today
korero.maori.nz Luu tru ngay 3 thang 1 nam 2006 tai Wayback Machine Maori language educational resources
Ethnologue report for Maori Luu tru ngay 26 thang 2 nam 2012 tai Wayback Machine
Maori Language Commission (sets definitive standards).
English and Maori Word Translator Luu tru ngay 21 thang 1 nam 2007 tai Wayback Machine, originally developed at the University of Otago.
Ngata Maori–English English–Maori Dictionary Luu tru ngay 28 thang 1 nam 2007 tai Wayback Machine from Learning Media; gives several options and shows use in phrases.
Collection of historic Maori newspapers
Maori Phonology Luu tru ngay 21 thang 7 nam 2011 tai Wayback Machine
maorilanguage.net Learn the basics of Maori Language with video tutorials
Microsoft New Zealand Maori Keyboard
Maori Language Week (NZHistory) - includes a history of the Maori language, the Treaty of Waitangi Maori Language claim and 100 words every New Zealander should know
Huia Publishers, catalogue includes Tirohia Kimihia the world's first Maori monolingual dictionary for learners
IMDb website; Maori language films Luu tru ngay 7 thang 4 nam 2008 tai Wayback Machine
Publications about Maori language Luu tru ngay 22 thang 5 nam 2010 tai Wayback Machine from Te Puni Kokiri, the Ministry of Maori Development