Louisiana Highway 26 (LA 26) is a state highway located in southwestern Louisiana. It runs 75.86 miles (122.08 km) in a northwest to southeast direction from a junction with the concurrent U.S. Highways 171 and 190 southeast of DeRidder to LA 14 in Lake Arthur. LA 26 was designated in the 1955 Louisiana Highway renumbering, replacing the entirety of former State Route 52. It also took over the western leg of , a long U-shaped route that was further split among the modern LA 14 and LA 31. Portions of the route had also carried US 190 briefly from 1935 to 1939.