| location = Elko County, Nevada, U.S.
| range = Ruby Mountains
| map = Nevada
| map_caption = Location in Nevada
| map_size = 200
| coordinates =
| coordinates_ref =
| topo = USGS Ruby Dome
| easiest_route = From Griswold Lake, Class 2 scramble east to the saddle between Griswold Lake and Seitz Canyon, then up to the saddle on either side of the summit and along the ridgeline
thumb|left|Closer view of Ruby Dome from the trail to the summit
Ruby Dome is the highest mountain in both the Ruby Mountains and Elko County, in Nevada, United States. It is the twenty-seventh-highest mountain in the state, and also ranks as the thirteenth-most topographically prominent peak in the state. The peak is located about southeast of the city of Elko within the Ruby Mountains Ranger District of the Humboldt-Toiyabe National Forest. The mountain rises from a base elevation of about to a height of . It is the highest mountain for over 90 miles in all directions.