Bailey Ruin is an archaeological site located in Navajo County, Arizona, United States. The site, also known as "Stott Ranch Ruin" and "Pope Ranch Site," was added to the National Register of Historic Places on March 17, 2006 for its historical and archaeological significance. Bailey Ruin, a well-preserved Ancient Puebloan site, was occupied from about AD 1275 to 1325, in the late Pueblo III Era to early Pueblo IV Era.