Bear Garden Mountain is a forested ridge in the Ridge-and-Valley Appalachians spanning Hampshire County, West Virginia, and Frederick County, Virginia. It extends southwest to northeast from Bear Garden Run in northern Frederick County to Mill Branch Creek near Capon Bridge in Hampshire County. Part of the ridge serves as the Virginia–West Virginia state line, including a 2.5-mile section beginning roughly 3 miles south of its northern end. The mountain is crossed by the Northwestern Turnpike, now U.S. Route 50, east of Capon Bridge, and by Bloomery Pike at Good, where West Virginia Route 127 meets Virginia State Route 127.