Tày Tac
A language of Viet Nam
| Population | No estimate available. |
| Region | Northwest, east Son La Province, Muong Tâc District. |
| Language maps |
Northern Viet Nam, reference number 90 Northwestern Viet Nam, reference number 90 |
| Dialects | Related to Tai Dam [blt], Tai Dón [twh], Tai Daeng [tyr]. |
| Classification | Tai-Kadai, Kam-Tai, Be-Tai, Tai-Sek, Tai, Southwestern, East Central, Chiang Saeng |
| Writing system | Latin script. Tai Viet script. |
| Comments | Part of Thái official nationality. Women’s blouses similar to that worn by White Tai women of Lai Châu, without the silver buttons. CN(C) in which N=V + tone, 22 consonants, 13 vowels, tonal, 6 tones on open syllables and those ending with a continuant, 3 tones on syllables ending with a stop. |

