Ivittuut, (old spelling Ivigtût) has been a municipality in the south of West Greenland since 1951. With an area of just 100 km² (600 km² according to other sources), it is the smallest municipality of Greenland, bordering on Narsaq municipality in the north, east, and south, and on the west by the Labrador Sea. It is on the coast of Arsuk fjord. Due its small size, the land of the municipality is all ice free, as it does not extend inward to the ice sheet of Greenland.
Ivittuut was founded as a mining town. In 1806, cryolite was found in the area, and mining started in 1865. The mineral deposits were exhausted by 1987, and the town lost its economic base. Now, the town of Ivittuut is abandoned, and the only settlement of the municipality is the naval base Kangilinnguit (Grønnedal) which is to stay. The municipality only exists de jure and may be absorbed by Narsaq in the future.