Ellenboro is a town in Ritchie County, West Virginia, United States. The population was 222 at the 2020 census. The town is located at the junction of U.S. Route 50 and West Virginia Route 16; the North Bend Rail Trail also passes through the town. The town was named for Ellen Mariah Williamson, the eldest daughter of the family that granted a right of way for the Baltimore and Ohio Railroad to build their line through the town; an earlier name for the community was Shumley. Ellenboro was incorporated in 1903.

Ritchie County is a county in the U.S. state of West Virginia. As of the 2020 census, the population was 8,444. Its county seat is Harrisville. The county was created in 1843 by the Virginia General Assembly and named for Richmond newspaper publisher Thomas Ritchie.