Siuslaw language
| Siuslaw | |
|---|---|
| Lower Umpqua | |
| Šáayušƛa Qúuiič | |
| Native to | United States | 
| Region | Oregon | 
| Ethnicity | Siuslaw people | 
| Extinct | 1960 | 
| Coast Oregon Penutian?
 
 | |
| Dialects | 
 | 
| Language codes | |
| ISO 639-3 | sis | 
| Glottolog | sius1254 | 
| ELP | Siuslaw | 
| Pre-contact distribution of Siuslaw | |
| Siuslaw is classified as Extinct by the UNESCO Atlas of the World's Languages in Danger. | |
Siuslaw /saɪˈjuːslɔː/ was the language of the Siuslaw people and Lower Umpqua (Kuitsh) people of Oregon. It is also known as Lower Umpqua. The Siuslaw language had two dialects: Siuslaw proper (Šaayušƛa) and Lower Umpqua (Quuiič).