Leo Petroglyph is an archaeological site near Leo in southern Ohio where a sandstone panel carved with prehistoric figures survives along an unglaciated Mississippian sandstone cliff. The panel bears 37 images, including human figures, animals, and footprints, and is generally attributed to Fort Ancient peoples between about AD 1000 and 1650. Though the carvings can be broadly identified, their exact meaning is still unknown, adding to the site’s significance. Protected beneath a wooden shelter built by the Works Progress Administration, the site is maintained by the Ohio History Connection and was listed on the National Register of Historic Places on November 10, 1970.