Bell Mountain, at 11,612 feet (3,539 m) above sea level, is the second highest peak in the Lemhi Range of Idaho. The peak is the highest point in Lemhi County and located 0.2 mi (0.32 km) north of the border with Butte County. The peak is located on the border of Caribou-Targhee National Forest and Salmon-Challis National Forest. It is about 9.5 mi (15.3 km) northwest of Diamond Peak. It is the 37th highest peak in Idaho.

The peak is named after Robert Norman Bell.