Hernshaw is an unincorporated community in Kanawha County, West Virginia, United States. Hernshaw is located on West Virginia Route 94, 2.5 miles (4.0 km) southwest of Marmet, along Lens Creek. Hernshaw has a post office with ZIP code 25107.

The community's name is an amalgamation of the names Herndon and Renshaw, two men in the local coal mining industry.