Arkansas Highway 313 is a north–south state highway in Lafayette County. The route runs 9.00 miles (14.48 km) from Arkansas Highway 53 north to Arkansas Highway 29 in Lewisville. The route does not intersect any other state highways.

Arkansas Highway 313 begins at Arkansas Highway 53 at Mars Hill, an unincorporated community. The route runs north into Lewisville, the county seat of Lafayette County.

The road is a two–lane road for its entire length.

The entire route is in Lafayette County.

The route was designated a state highway in 1965.