The Kumiai are one of the Indigenous peoples of Baja California, especially northern Baja California and the California borderlands. Their history is connected to a region that crosses modern political borders and includes Indigenous communities on both sides of the present-day Mexico-United States border.

For learners, the Kumiai help show that Indigenous history in Mexico is not limited to central or southern civilizations. Baja California has its own Indigenous peoples, languages, and cultural landscapes that are important to understanding the full country.