Wardensville is a town in Hardy County, West Virginia, United States. The population was 265 at the 2020 census. Originally named Trout Run, Wardensville was chartered in Virginia in 1832 and incorporated in West Virginia in 1879. Wardensville is located west of the Great North Mountain range, which separates it from the Shenandoah Valley. The town lies on the east bank of the Cacapon River at its confluence with Trout Run.