Highway 231 (AR 231, Ark. 231, and Hwy. 231) is a designation for three north–south state highways in northeast Arkansas. All three segments serve rural, agricultural areas in the Arkansas Delta. One segment of 5.79 miles (9.32 km) runs north from U.S. Route 412 (US 412) to Highway 34. A second route of 3.02 miles (4.86 km) begins at Highway 90 near O'Kean and runs north to Highway 304 at . A third segment of 6.12 miles (9.85 km) begins at Highway 251 and runs to Highway 93. All routes are maintained by the Arkansas State Highway and Transportation Department (AHTD).