| Southwestern Tai | |
|---|---|
| Southwestern Thai | |
| Geographic distribution | Southeast Asia |
| Linguistic classification | Kra–Dai |
| Proto-language | Proto-Southwestern Tai (Proto-Thai) |
| Subdivisions |
|
| Language codes | |
| Glottolog | sout3184 |
 Distribution of the Southwestern Tai languages. | |
The Southwestern Tai or Thai languages are a branch of the Tai languages of Southeast Asia. Its languages include Central Thai (Siamese), Northern Thai (Lanna), Lao (including Isan), Shan and others.