| name | Ethnologue status | language family | office | IETF | alphabet | ISO 6391 | ISO 6392 | ISO 6393 | speakers (people) | Manuscript | micronation | publisher | former country | is a dialect |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chickasaw language | 8a Moribund | Muskogean languages | nai | cic | 75 | Yes | ||||||||
| Choctaw language | 6b Threatened | Muskogean languages | Latin script | cho | cho | 10,400 | Yes | |||||||
| Koasati language | 7 Shifting | Muskogean languages | cku | cku | 400 | Yes | ||||||||
| Mikasuki language | 6b Threatened | Muskogean languages | mik | Latin script | nai[1] | mik | 500 | Yes | ||||||
| Muscogee language | 7 Shifting | Muskogean languages | Latin script | mus | mus | 4,300 | Yes |