Ridgeville Corners is an unincorporated community and census-designated place (CDP) in southern Ridgeville Township, Henry County, Ohio, United States. The population was 416 at the 2020 census.
Ridgeville Corners was laid out at an unknown date as an early trading point of Ridgeville Township. The First Congregational Church in Ridgeville Corners was a stop on the Underground Railroad in the mid-1800s. A post office has been in operation at Ridgeville Corners since 1841.
Ridgeville Corners is located along U.S. Route 6, approximately northwest of Napoleon, the Henry county seat. It is located southeast of Bryan.
According to the United States Census Bureau, the CDP has an area of , all of it recorded as land. As its name suggests, Ridgeville Corners sits on high ground, with the northwest side draining towards the Tiffin River, a south-flowing tributary of the Maumee River, and the southeast side of the community draining directly to the Maumee.