Skjoldungen is a large uninhabited island in southeastern Greenland, located in King Frederick VI Coast. The island covers a total area of approx 450 km2 (174 mi2).
Skjoldungen Island was named by Wilhelm August Graah (1793–1863; Danish Arctic explorer and naval officer). Skioldungen is a honorific title for successors of King Skjoldr (Skjold) - according to Norse mythology - among the first Danish kings.
The issland is between two fjords - Southern Skjoldungen Fjord (to the southwest) and Northern Skjoldungen Fjord (to the northeast, between one of the arms of Thorland Peninsula and Skjoldungen). Morkesund is a 700 m (2297 ft) wide sound that joins both fjords in the northwest, separating the island from mainland Greenland.
Skjoldungen Island stretches 49 km (30 ml) a northeast-southwest direction. Its highest elevation point (Azimuthbjerg, at the northwest end) is 1738 m (5702 ft). Island's max width is 14 km (9 mi). The island has rugged terrain, including the glaciers Bjarje, Hjalte and Skjoldmoen. Largest peninsulas are Roar Halvo and Helges Halvo. Island's southernmost headland (Cape Niels Juel) is a narrow cape of reddish-brown rock located at the end of Helges Halvo.