Vennesla is the administrative centre of Vennesla municipality in Agder county, Norway. The village is located in the upper Torridal valley along the river Otra, about 15 kilometres north of the city of Kristiansand. The village itself extends for about 10 kilometres along both sides of the river. The Norwegian National Road 9 passes through Mosby, about 6 kilometres south of Vennesla. The Sørlandsbanen railway line passes through Vennesla, stopping at Vennesla Station.