Arc Dome is the highest mountain of the Toiyabe Range in northwestern Nye County, Nevada, United States. It is the thirteenth-highest mountain in the state. Arc Dome also ranks as the second-most topographically prominent peak in Nye County and the eighth-most prominent peak in the state. The peak is located about 53 mi north of the community of Tonopah, within the Arc Dome Wilderness of the Humboldt-Toiyabe National Forest. Arc Dome is sometimes confused with Toiyabe Dome. The fact that the summit benchmark is marked “Toiyabe Dome” only adds to this confusion. However, these are separate peaks. Toiyabe Dome at 11361 ft is about 5 mi southeast of Arc Dome, above the small community of Carvers, Nevada.