Chapmanville is a town in Logan County, West Virginia, United States. The population was 1,025 at the 2020 census. Chapmanville is named for Ned Chapman, an early settler who operated a store and post office. It was incorporated in 1947.

Logan County is a county in the U.S. state of West Virginia. As of the 2020 census, the population was 32,567. Its county seat is Logan. Logan County comprises the Logan, WV Micropolitan Statistical Area, which is also included in the Charleston–Huntington–Ashland, WV–OH–KY Combined Statistical Area.