This article is about the Atacama Region; for the desert, see Atacama Desert.
Coordinates: 27°22′S 70°19′W / 27.367°S 70.317°W / -27.367; -70.317

The III Atacama Region Region (Spanish: III Región de Atacama) is one of Chile's 15 first order administrative divisions. The southern portion of the Atacama Desert is in the region; the rest of the desert is in the other regions to the north (Norte Grande natural region).

The capital of the region is the city of Copiapó; it is at 806 km (501 mi) north of Santiago, the capital of country.