Frankfort is a village in Ross County, Ohio, United States, along the North Fork of Paint Creek. The village is located in Concord Township. The population was 1,011 at the 2000 census.
Frankfort is located at 39°24′20″N 83°10′56″W / 39.40556°N 83.18222°W / 39.40556; -83.18222 (39.405687, -83.182219).
According to the United States Census Bureau, the village has a total area of 0.6 square miles (1.5 km²), all of it land.