Artemisia rothrockii is a North American species of sagebrush known by the common names timberline sagebrush and Rothrock's sagebrush. Artemisia rothrockii is endemic to California, where it is native to parts of the Sierra Nevada, the White Mountains, and the San Bernardino Mountains. It has been recorded from the Kern Plateau, Mount Dana, Angora Peak, and the vicinity of Fallen Leaf Lake. It grows in the dry transition between mountain meadows and forests. It can also tolerate wet conditions, surviving waterlogging during snowmelt.