West Charleston, Ohio

West Charleston is an unincorporated community in western Bethel Township, Miami County, Ohio, United States. It was laid out in 1807 by Charles Friend and was at that time known as Friendtown. Notable early residents were John Newcomb, the first merchant, and Jack Schlosser, the first tavernkeeper. Also from West Charleston was the Hoagland family, developers of Royal Baking Powder. The business was later moved to the nearby city of Troy, Ohio, and later to New York City.

West Charleston lies astride State Route 202, earlier known as the North Miami Pike. The road was formed along the route cut through the area by George Rogers Clark in 1782 during his campaigns against the natives at Lower Piqua and Upper Piqua. It is also the route taken southward to Cincinnati by General "Mad Anthony" Wayne after the Battle of Fallen Timbers and the completion of the Treaty of Greenville.

The community is part of the Dayton Metropolitan Statistical Area.