Wasu language should not be confused with Waitaká language.
| Wasu | |
| States: | Brazil |
| Region: | Alagoas |
| Extinct: | ? |
| Familycolor: | American |
| Family: | unclassifiable |
| Iso3: | wsu |
| Glotto: | wasu1238 |
| Glottorefname: | Wasu |
Wasu (Waçu, Wassú) is an extinct and unattested, presumed language of the Serra do Azul in Joaquim Gomes, Alagoas, Brazil. The ethnic population is about 1,500.