Kumeyaay astronomy or cosmology (Kumeyaay: My Uuyow, "sky knowledge") comprises the astronomical knowledge of the Kumeyaay people, a Native American group whose traditional homeland occupies what is now Southern California in the United States and adjacent parts of northern Baja California in Mexico.

[2] The first evidence of astronomical observations and visual registration was discovered in the El Vallecito archeological zone.

These paintings were made by the Kumeyaay people, possibly during nomadic travels.

[3][4] Kumeyaay sand paintings and rock art modeled the passage of the sun, moon, and constellations.

[5] Observation areas were made by the Kumeyaay to watch and register astronomical events.