The Cocopah, also Cucapá (in Cocopa: Kwapa or Kwii Capáy - "Cloud People" referring to the fog along the Colorado River), are Native Americans who live in Baja California and Sonora, Mexico, and in Arizona in the United States.
The Cocopah language belongs to the Delta–California branch of the Yuman family.
The Spanish term for Cocopah is Cucapá.
Their self-designation is Xawiƚƚ kwñchawaay, translating to “Those Who Live on the Cloudy River” (from Xawíƚƚy - "river", kwii - "cloud", (ny)way - "to live", llyay/nyaam - "many").
According to the US Census, there are 1,009 Cocopah in 2010.