The Yuki are a Native American

Native Americans in the United States

Native Americans in the United States are the indigenous peoples in North America within the boundaries of the present-day continental United States, parts of Alaska, and the island state of Hawaii. They are composed of numerous, distinct tribes, states, and ethnic groups, many of which survive as...

 people from the zone of Round Valley

Round Valley

Round Valley may refer to some entities in the United States & Canada:* Round Valley No. 410, Saskatchewan, rural municipality in Saskatchewan, Canada* Round Valley, California, in Inyo County* Round Valley, Mendocino County, California...

, in what today is part of the territory of Mendocino County, Northern California

Northern California

Northern California is the northern portion of the U.S. state of California. The San Francisco Bay Area , and Sacramento as well as its metropolitan area are the main population centers...

. Yuki tribes are thought to have settled as far south as Hood Mountain

Hood Mountain

Mount Hood, also known as Hood Mountain is a mountain near the southeastern edge of Santa Rosa, California at the northeast of the Sonoma Valley and attains a height of . The originally name was Mount Wilikos, an Indian name meaning "willows."...

 in present-day Sonoma County. In their own language, the Yuki call themselves the autonym Ukomno'm (Valley People).

European Americans learned and adopted the name Yuki from the their neighbors and competitors, the Nomlaki

Nomlaki

The Nomlaki are a Wintun people native to the area of the Sacramento Valley, extending westward to the Coast Range in Northern California. Currently one person speaks Nomlaki...

, who called them "enemy" in Wintu

Wintu

The Wintu are Native Americans who live in what is now Northern California. They are part of a loose association of peoples known collectively as the Wintun . Others are the Nomlaki and the Patwin...

language.