Cuối language
| Cuói | |
|---|---|
| Thổ | |
| Native to | Vietnam, Laos | 
| Ethnicity | Thổ | 
| Native speakers | (71,000 cited 1999 census) | 
| Austroasiatic
 
 | |
| Dialects | 
 | 
| Latin, Lao | |
| Language codes | |
| ISO 639-3 | Either: tou– Thohnu– Hung | 
| Glottolog | cuoi1242 | 
| Linguasphere | 46-EAD-a | 
Cuối, also known as Thổ, is a dialect cluster spoken by around 70,000 people in Vietnam. It is also spoken by a couple thousand people in Laos—mainly in the provinces of Bolikhamsai and Khammouane.