|Yuki men at the Nome Cult Farm, ca. 1858|
|Regions with significant populations|
|United States ( California)|
|Related ethnic groups|
The Yuki are an indigenous people of California, whose traditional territory is around Round Valley, Mendocino County. Today they are enrolled members of the Round Valley Indian Tribes of the Round Valley Reservation.
The Yuki call themselves the autonym Ukomno'm, meaning "Valley People." European Americans learned and adopted the name "Yuki" from the their neighbors, the Nomlaki, who called them "enemy" in the Wintu language. "Yuki" is an exonym, a name by another group. European Americans learned of the Yuki from the Nomlaki, traditional enemies of the Yuki, around 1850.
The Yuki language is no longer spoken. It is related to the Wappo language, and both are Penutian languages. The Yuki people had a quaternary (4-based) counting system, based on counting the spaces between the fingers, rather than the fingers themselves.
Scholarly estimates have varied substantially for the pre-contact populations of most native groups in California, as historians and anthropologists have tried to evaluate early documentation. Alfred L. Kroeber estimated the 1770 population of the Yuki proper, Huchnom, and Coast Yuki as 2,000, 500, and 500, respectively, or 3,000 in all. Sherburne F. Cook initially raised this total slightly to 3,500. Subsequently, he proposed a higher estimate of 9,730 Yuki.
See also 
- "California Indians and Their Reservations: Yuki Indians." San Diego State University Library and Information. Retrieved 23 October 2012.
- "Yuki." Ethnologue. Retrieved 23 October 2012.
- Harrison, p.173
- Kroeber, p.883
- Cook, 1976 p.172
- Cook, 1956 pp.106, 108
- Cook, Sherburne F. 1956. "The Aboriginal Population of the North Coast of California", Anthropological Records, 16:81-130. University of California, Berkeley.
- Cook, Sherburne F. 1976. The Conflict between the California Indian and White Civilization. University of California Press, Berkeley.
- Harrison, K. David 2007. When Languages Die. New York: Oxford University Press.
- Kroeber, A. L. 1925. Handbook of the Indians of California. Bureau of American Ethnology Bulletin No. 78. Washington, D.C.
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