The Sierra Pinta or Sierra Pintas (colloquial Spanish for 'Painted Mountains') are a narrow remote block faulted northwest-southeast trending mountain range, about 22 miles (35 km) long located in southwestern Arizona in the arid northwestern Sonoran Desert, just north of the Pinacate Reserve of northern Sonora, Mexico.

West of the Sierra Pintas is the Tule Desert, and south in northern Sonora is the El Pinacate y Gran Desierto de Altar, the extensive and active volcanic and cinder cone field and preserve.

[1] West of the northwest end of the Sierra Pintas, the north–south "Christmas Pass Road" goes south from Interstate 8 and through Christmas Pass, adjacent to the Tule Desert, on the southeast end of the Cabeza Prieta Mountains (all to the southwest of the Sierra Pintas).

The closest access point from the north is Mohawk on Interstate 8 in Arizona, through the Barry M. Goldwater Air Force Range.

Ajo, Arizona is 35 air miles eastward beyond two mountain ranges and valleys; Sonoyta, Sonora is slightly southeastward at the south border crossing of the Organ Pipe Cactus National Monument.