Pennsylvania Route 438 (PA 438) is an 10-mile (16 km) long state highway located in Lackawanna county in Pennsylvania. The western terminus is at US 6/US 11 near Dalton. The eastern terminus is at PA 247 in Scott Township.

PA 438 begins at an intersection with US 6/US 11 in the community of LaPlume in La Plume Township, heading northeast on two-lane undivided East Laplume Road. The road heads through areas of fields with some homes, crossing a Canadian Pacific railroad line and entering North Abington Township. The route heads into woodland and crosses the South Branch Tunkhannock Creek into Benton Township. Here, PA 438 turns east before curving to the north and back to the east as it heads through woodland with some fields and homes. The road heads into Lackawanna State Park and intersects PA 407 in the community of Wallsville. The route becomes Montdale Road and continues east through more of the park, passing to the north of Lake Lackawanna. PA 438 leaves Lackawanna State Park and heads through more rural areas, passing through East Benton. The road enters Scott Township, where it passes through Jordan Hollow and comes to an interchange with I-81. Past this, the route runs southeast through forests with some small fields and homes, intersecting the eastern terminus of PA 524 in Scott. PA 438 continues through rural areas, coming to its eastern terminus at PA 247 in Montdale.

The entire route is in Lackawanna County.