The Kumeyaay, also known as 'Iipai-Tiipai or by the historical Spanish name Diegueño, is a tribe of indigenous people 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.
The Kumeyaay language belongs to the Yuman–Cochimà language family. The Kumeyaay consist of three related groups, the 'Iipai, Tiipai, and Kamia. The San Diego River loosely divided the 'Iipay and the Tiipai historical homelands, while the Kamia lived in the eastern desert areas. The 'Iipai lived to the north, from Escondido to Lake Henshaw, while the Tiipai lived to the south, in lands including the Laguna Mountains, Ensenada, and Tecate. The Kamia lived to the east in an area that included Mexicali and bordered the Salton Sea.