| name | Ethnologue status | language family | office | IETF | alphabet | ISO 6391 | ISO 6392 | ISO 6393 | speakers (people) | Manuscript | micronation | publisher | former country | is a dialect |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arikara language | 8b Nearly Extinct | Caddoan languages | ari | Latin script | ari | 10 | Yes | |||||||
| Caddo language | 8a Moribund | Caddoan languages | cad | Latin script | cad | cad | 25 | Yes | ||||||
| Pawnee language | 8b Nearly Extinct | Caddoan languages | paw | paw | 20 | Yes | ||||||||
| Wichita language | 9 Dormant | Caddoan languages | wic | 3 | Yes | |||||||||
| Kitsai language | 9 Dormant | Caddoan languages | kii | Latin script | kii | 0 | Yes |