Trydal is a village in Bykle Municipality, in Agder, Norway. Trydal lies at 519 m above sea level, at the foot of the Setesdal Vesthei Ryfylkeheiane mountains. It has 52 inhabitants. The nearest city is Stavanger/Sandnes, 101 km to the west. Among the landmarks around are Old Bykle Church (3.1 km), Bykle Church (3.0 km) and Valle Church (16.6 km). Among the natural features are Svarvarnuten (14.2 km) and Steinheii (14.3 km).