The Sweetwater Mountains (highest peak: Mount Patterson 11,654 feet (3,552 m)[2]) are a small mountain range in northern Mono County, California and western Lyon County, Nevada, separating the West Walker River from the East Walker River.

Most of the range is only accessible by four wheel drive vehicle, on foot, or pack animal.

The ghost towns of Belfort and Clinton are small gold mining camps on the southeastern slope of Mt.

The area roughly forming a SE quadrant from the summit of Mt Patterson, bounded by Sweetwater Canyon (easterly line) and Frying Pan Canyon (southerly line), is known as the Patterson Mining District of Mono County according to the 1888 report of the State of California Mineralogist.

The Sweetwater Mountains geology largely consists of a pluton surrounded by volcanic flow from the Little Walker Caldera.