Langfossen, also called Langfoss, is a waterfall in Vaulaelva in Etne municipality in Vestland county. The waterfall flows out on the south side of the innermost part of Åkrafjorden. With a total fall of 612 meters, Langfossen is the fifth highest waterfall in Norway. Europavei 134, which runs along the Åkrafjord, crosses the waterfall over a road bridge just above the fjord.
There are parking and picnic areas near the waterfall, which makes the waterfall very accessible for tourists and spectators. The car park is also the starting point for a signposted summit hike, a walk along steep paths, and a paved farm road to Langfoss-stølen on the mountain.
