Karuk or Karok is the traditional language of the Karuk people in the region surrounding the Klamath River, in Northwestern California. The name ‘Karuk’ is derived from the Karuk word káruk, meaning “upriver”.

The Karuk people are an indigenous people of California, and the Karuk Tribe is one of the largest tribes in California. Karuks are also enrolled in two other federally recognized tribes, the Cher-Ae Heights Indian Community of the Trinidad Rancheria and the Quartz Valley Indian Community.