Namuyi (Namuzi; autonym: na54 mʑi54) is a Tibeto-Burman language belonging to the Naic branch, spoken by approximately 10000 people.

Namuyi has also been classified as Qiangic by Sun Hongkai (2001) and Guillaume Jacques (2011).

The language is endangered[3] and the number of speakers with fluency is decreasing year by year, as most teenagers do not speak the language, instead speaking the Sichuan dialect of Chinese.

[4] Namuyi is a language spoken in the following four villages of southern Sichuan:[5] It is also spoken in Muli and Yanyuan of the Liangshan Autonomous Prefecture and Jiulong County in Ganzi Autonomous Prefecture.

[6] Namuyi also has ten phonemic vowels, /i/ for [i], /e/ for [e], /ɛ/ for [ɛ], /ɨ/ for [ʃ,ɯ] /ʉ/ for [y], /ə/ for [ə], /a/ for [a], /u/ for [u], /o/ for [o], and /ɔ/ for [ɔ].