Medway is an unincorporated community in Bethel Township, Clark County, Ohio, United States. It is part of the Springfield, Ohio Metropolitan Statistical Area. Near are the adjoining communities of Crystal Lakes and Park Layne. The population of its ZCTA for ZIP Code 45341, which includes Medway, was 4,110 at the 2000 census. Medway lies within the Tecumseh Local School District, whose high school mascot is the Arrows.