Arkansas Highway 151 (AR 151, Hwy. 151) is a designation for two north–south state highways in Mississippi County, Arkansas. An eastern route of 5.75 miles (9.25 km) runs from Highway 148 north to Highway 18. A second route of 6.65 miles (10.70 km) begins at Highway 18 in Blytheville and runs north to Missouri supplemental route TT (SSR-TT) at the Missouri state line. A third route was dedicated in May 2013 and begins at State Line Avenue in Texarkana and continues east to Interstate 49/U.S. Route 71.