Highway 139 (AR 139, Ark. 139, and Hwy. 139) is a designation for two north–south state highways in the Upper Arkansas Delta. One route of 17.65 miles (28.40 km) begins at Highway 158 in Caraway and runs north to Missouri Supplemental Route F at the Missouri state line. A second route of 34.86 miles (56.10 km) runs from US Highway 412 (US 412) to Missouri Route 51 at the Missouri state line. Both routes are maintained by the Arkansas State Highway and Transportation Department (AHTD).