The Caddoan languages are a family of Native American languages. They are spoken across the Great Plains of the central United States, from North Dakota to Oklahoma. Arikara is spoken on the Fort Berthold Reservation in North Dakota; Caddo, Wichita, and Pawnee are presently spoken in Oklahoma; Kitsai is extinct. Some of the languages were formerly more widespread; the Caddo, for example, used to live in northeastern Texas, southwestern Arkansas, and northwestern Louisiana as well as southeastern Oklahoma. The Pawnee formerly lived along the Platte River in what is now Nebraska.

Caddoan languages
A. North Caddoan

Arikara (a.k.a. Ree)
Kitsai (a.k.a. Kichai) (?)
Pawnee (dialects: South Bend, Skiri (a.k.a. Skidi or Wolf Band))
Wichita (dialects: Wichita proper, Waco, Towakoni)
B. South Caddoan

Caddo (dialects: Kadohadacho, Hasinai, Natchitoches)
?The Kitsai language is now extinct.