Apalachee language
| Apalachee | |
|---|---|
| Native to | United States | 
| Region | Florida | 
| Ethnicity | Apalachee | 
| Extinct | early 18th century | 
| Muskogean
 
 | |
| Language codes | |
| ISO 639-3 | xap | 
| xap | |
| Glottolog | apal1237 | 
Apalachee was a Muskogean language of Florida. It was closely related to Koasati and Alabama. Apalachee was found to belong to the same branch of the Muskogean family as Koasati, Alabama, and Hitchiti.
The language is known primarily from one document, a letter written in 1688 to Charles II of Spain. Geoffrey Kimball has produced a grammatical sketch and a vocabulary of the language based on the contents of the letter.