John Brown Tannery Site is a historic archaeological site located at Richmond Township, Crawford County, Pennsylvania. The tannery was built in 1825, by famed abolitionist John Brown (1800–1859). The site includes the ruins of the tannery; a one-story, rectangular structure measuring 55 feet by 22 feet. A fire destroyed the building in 1907. It is open to the public as the John Brown Farm, Tannery & Museum. It was added to the National Register of Historic Places in 1978.