Muskogean (also Muskhogean, Muskogee) is a Native American language family spoken in different areas of the Southeastern United States.

[2] The major subdivisions of the family have long been controversial, but the following lower-level groups are universally accepted: Choctaw–Chickasaw, Alabama–Koasati, Hitchiti–Mikasuki, and Muscogee.

[3][4][5] Because Apalachee is extinct, its precise relationship to the other languages is uncertain; Mary Haas and Pamela Munro both classify it with the Alabama–Koasati group.

[16] The historian Steven Oatis also describes the Yamasee as an ethnically mixed group that included people from Muskogean-speaking regions, such as the early colonial-era native towns of Hitchiti, Coweta, and Cussita.

[17] The Amacano, Chacato, Chine, Pacara, and Pensacola people, who lived along the Gulf Coast of Florida from the Big Bend Coast to Pensacola Bay, are reported to have spoken the same Muskogean language, which may have been closely related to Choctaw.

[18][19][20][21] Sparse evidence indicates that a Muskogean language was spoken by at least some of the people of the paramount chiefdom of Cofitachequi in northeastern South Carolina.

[24] Most family languages display lexical accent on nouns and grammatical case, which distinguishes the nominative from the oblique.

Muskogean verbs have a complex ablaut system; the verbal stem almost always changes depending on aspect; less commonly, it is affected by tense or modality.