Indigenous peoples of California, commonly known as Indigenous Californians or Native Californians, are a diverse group of nations and peoples that are indigenous to the geographic area within the current boundaries of California before and after European colonization. There are currently 109 federally recognized tribes in the state and over forty self-identified tribes or tribal bands that have applied for federal recognition. California has the second-largest Native American population in the United States.

The Kumeyaay, also known as 'Iipai-Tiipai or by the historical Spanish name Diegueño, is a tribe of Indigenous peoples of the Americas who live at the northern border of Baja California in Mexico and the southern border of California in the United States. They are an indigenous people of California.