Charm is an unincorporated community in northwestern Clark Township, Holmes County, Ohio, United States. Although it is unincorporated, it has a post office, with the ZIP code of 44617. It lies along State Route 557.
The origin of the name "Charm" is obscure.
Baby Swiss cheese was developed in the mid-1960s outside of Charm, Ohio, by the Guggisberg Cheese Company, owned by Alfred Guggisberg.