Boyd Mill Ruins is a property in Franklin, Tennessee that was listed on the National Register of Historic Places in 1988. It was built in the early 19th century, powered by the West Harpeth River. The mill was used to produce flour and corn mill for area farmers for more than 50 years. It was one of about a dozen water-powered mills in the county in the 19th century. Around 1900, the mill ceased operation, and was left to fall into ruins. The stone foundations and turbine pit are more intact than any other former mill buildings in the county, providing the best example of the importance of the milling industry within 19th century commerce.