| Caddoan | |
|---|---|
| Geographic distribution | Great Plains, North America |
| Linguistic classification | One of the world's primary language families |
| Subdivisions |
|
| Language codes | |
| ISO 639-5 | cdd |
| Linguasphere | 64-B |
| Glottolog | cadd1255 |
 Pre-contact distribution of Caddoan languages | |
The Caddoan languages are a family of languages native to the Great Plains spoken by tribal groups of the central United States, from present-day North Dakota south to Oklahoma. All Caddoan languages are critically endangered, as the number of speakers has declined markedly due to colonial legacy, lack of support, and other factors.