South Branch Mountain is a mountain ridge that runs southwest to northeast through Hampshire and Hardy counties in the Eastern Panhandle of the U.S. state of West Virginia, rising to its greatest elevation of 3,028 feet (923 m) above sea-level in the Nathaniel Mountain Wildlife Management Area.

It forms the eastern edge of the South Branch Potomac River Valley from Springfield to Moorefield.

The Northwestern Turnpike (U.S. Route 50) climbs South Branch Mountain between Shanks and Romney in an area known as Sunrise Summit.

The forested wetlands that were once located here on the mountain's top were destroyed by the expansive commercial and residential developments in the Sunrise Summit area along US 50.

This article about a location in the Potomac Highlands of West Virginia is a stub.