Millersport is a village in Fairfield County, Ohio, United States. The population was 963 at the 2000 census. Millersport is most notable as the home of the Sweet Corn Festival, which is held in Millersport annually during the first week of September.
Millersport is located at 39°54′1″N 82°31′57″W / 39.90028°N 82.5325°W / 39.90028; -82.5325 (39.900205, -82.532500).
According to the United States Census Bureau, the village has a total area of 1.0 square miles (2.7 km²), of which, 1.0 square miles (2.6 km²) of it is land and 0.04 square miles (0.1 km²) of it (2.91%) is water.