The Maidu are a Native American people of northern California. They reside in the central Sierra Nevada, in the watershed area of the Feather and American Rivers and in Humbug Valley. In Maiduan languages, maidu means "man".

The Sierra Nevada is a mountain range in the Western United States, between the Central Valley of California and the Great Basin. The vast majority of the range lies in the state of California, although the Carson Range spur lies primarily in Nevada. The Sierra Nevada is part of the American Cordillera, an almost continuous chain of mountain ranges that forms the western "backbone" of the Americas.