Utian (also Miwok–Costanoan, previously Mutsun) is a family of indigenous languages spoken in the central and north portion of California, United States. The Miwok and Ohlone peoples both spoke languages of the Utian language family. It has recently been argued that the Utian languages and Yokuts languages are sub-families of the Yok-Utian language family (Callaghan 1997, 2001; Golla 2007:76-77). Utian and Yokutsan have traditionally been considered part of the Penutian language phylum (Goddard 1996:313-319; Mithun 1999; Shipley 1978:82-85).
^Nordhoff, Sebastian; Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2013). "Miwok–Costanoan". Glottolog. Leipzig: Max Planck Institute for Evolutionary Anthropology.
Callaghan, Catherine. (1997). Evidence for Yok-Utian. International Journal of American Linguistics, 63, pages 18–64.
Callaghan, Catherine. (2001). More evidence for Yok-Utian: A reanalysis of the Dixon and Kroeber sets International Journal of American Linguistics, 67 (3), pages 313-346.
Goddard, Ives. (1996). "The Classification of the Native Languages of North America." In Languages, Ives Goddard, ed., pp. 290–324. Handbook of North American Indians Vol. 17, W. C. Sturtevant, general ed. Washington, D. C.: Smithsonian Institution. ISBN 0-16-048774-9.
Golla, Victor. (2007). "Linguistic Prehistory" in California Prehistory: Colonization, Culture, and Complexity, pp. 71–82. Terry L. Jones and Kathryn A. Klar, editors. New York: Altamira Press. ISBN 978-0-7591-0872-1.
Shipley, William F. (1978). Native Languages of California, in Handbook of North American Indians, Vol. 8 (California). William C. Sturtevant, and Robert F. Heizer, eds. Washington, DC: Smithsonian Institution. ISBN 0-16-004578-9 / 0160045754, pages 80–90.