The Dunbar Cave State Park is a state park and natural area in Clarksville, Tennessee. It features the Dunbar Cave, best known as the 280th largest cave complex in the world with 8.067 miles inside it.

Originally used by prehistoric peoples for shelter and religious ceremonies, the Dunbar Cave State Park transitioned from being a homestead to a tourist attraction within just a century. It was first claimed by Isacc Rowe Peterson and by Thomas Dunbar, who the cave was named after. It was later transformed into a saltpeter mine for gunpowder during the Mexican-American War. It became a tourist attraction starting 1858 when the first cabins were built at the site and then later on a hotel. The site even hosted numerous social events like square dances, concerts, and radio shows.

Visitors can enjoy hiking, fishing, and picnicking at the site. Tours are currently temporarily suspended, though.