Tày language
| Tày | |
|---|---|
| Tiểng Tày, Thổ | |
| Native to | Vietnam | 
| Ethnicity | Tày | 
| Native speakers | 1.63 million (2009) | 
| Latin (modified Vietnamese alphabet) Chữ Nôm Tày (archaic) | |
| Language codes | |
| ISO 639-3 | tyz | 
| Glottolog | tayy1238 | 
Tày or Thổ (a name shared with the unrelated Thổ and Cuoi languages) is the major Tai language of Vietnam, spoken by more than a million Tày people in Northeastern Vietnam.