Henderson Mountain is a 10,343-foot (3,153-metre) summit in Park County, Montana, United States.

Topographic relief is significant as the summit rises nearly 1,400 feet (427 meters) above Fisher Creek in 0.6 miles (0.97 km).

The mountain is a laccolith composed of Cambrian limestone, breccia, and Eocene dacite porphyry.

[7] The mountain's toponym has been officially adopted by the United States Board on Geographic Names,[3] and has been featured in publications since at least 1893.

[8] Bart Henderson was one of the four trappers who discovered the New World Mining District in 1869, with the others being Adam Miller, J. H. Moore, and James Gourley.