Antimony Peak is a 3,248-foot summit in California’s Diablo Range, standing on the boundary between San Benito and Merced counties. It rises along the divide between the San Benito Valley side and the Central Valley side of the range, forming part of the east-west line of high ground that influences drainage and travel through this interior landscape. Located just south of Frenchs Pass and southeast of French Ranch, the peak is notable less for development or major landmarks than for its position on the county line and its place within the broader geography of the Diablo Range.