Caddoan languages

Caddoan
Geographic distribution	Great Plains, North America
Linguistic classification	One of the world's primary language families
Subdivisions	Northern Caddo
ISO 639-5	cdd
Linguasphere	64-B
Glottolog	cadd1255
Pre-contact distribution of Caddoan languages

The Caddoan languages are a family of languages native to the Great Plains spoken by tribal groups of the central United States, from present-day North Dakota south to Oklahoma. All Caddoan languages are critically endangered, as the number of speakers has declined markedly due to colonial legacy, lack of support, and other factors.