The Franks Site is a large archaeological site in the northeastern part of the U.S. state of Ohio. Located atop bluffs overlooking the Vermilion River in northwestern Lorain County, it lies in the city of Vermilion close to the river's mouth in Lake Erie. The site was once inhabited by people of the Erie tribe before their destruction, and archaeological investigations have yielded enough information to make it exceptionally valuable for learning about its erstwhile inhabitants.