Harrisville is a town in Ritchie County, West Virginia, United States. The population was 1,842 at the 2000 census. It is the county seat of Ritchie County. The town is home to historic Berdine's Five and Dime.
Harrisville is located at 39°12′36″N 81°3′3″W / 39.21°N 81.05083°W / 39.21; -81.05083 (39.209866, -81.050917).
According to the United States Census Bureau, the town has a total area of 1.6 square miles (4.2 km²), all land.