Songdalen is a municipality in Vest-Agder county, Norway. Songdalen was created as a new municipality on 1 January 1964 through the merger of the former municipalities of Finsland, Greipstad and a small part of Øvrebø. The administrative center is the village of Nodeland. The central market area is located at Brennåsen.
The Old Norse form of the name is uncertain. The first element is related to the river name Sygna (see Søgne), but the exact form and meaning is unknown. The last element is the finite form of dal which means "valley" or "dale".The coat-of-arms is from modern times. They were granted on 20 December 1985. The arms show three oak leaves, each for one of the three former municipalities of Greipstad, Finsland, and Øvrebø, which now form the municipality of Songdalen. The oak was chosen, as the area is heavily forested.