The Cana Island lighthouse is a lighthouse located just north of Baileys Harbor in Door County, Wisconsin, United States. Along with the Baileys Harbor Range Lights, the lighthouse was built to replace the Baileys Harbor Lighthouse in 1869 and was first lit in 1870. It is still used as an active navigational aid under the jurisdiction of the United States Coast Guard, and was added to the National Register of Historic Places in 1976. Since the 1970s, both the lighthouse and its keeper's quarters are open for visitors to tour by means of the Door County Maritime Museum.