The Ciervo Hills are a low mountain range in west Fresno County, in the western San Joaquin Valley of central California.

[1] Interstate 5 runs parallel to the hills on the east.

Cantua Creek and its Arroyo de Cantúa canyon divides them from the Big Blue Hills.

Several California rare plant species are endemic to the Ciervo Hills and bordering Tumey Hills including Panoche peppergrass (Lepidium jaredii ssp.

album),[2] Idria buckwheat (Eriogonum vestitum),[3] and gypsum-loving crownscale (Atriplex gypsophila).