Why (O'odham: Ban Hi:nk) is a tiny unincorporated rural community in Pima County, Arizona, United States.
Why is near the western border of the Tohono O'Odham Indian Reservation. It is due north of Organ Pipe Cactus National Monument in Southern Arizona.
Why is about thirty miles north of the Mexican border where Lukeville, Arizona, and Sonoita, Sonora, Mexico, border each other. It is ten miles south of Ajo, Arizona.