A fjord (from the Norwegian; spelt fiord in North America and New Zealand) is a long, narrow arm of the sea, formed as a result of erosion by a valley glacier.

Elevated ground view of Kejser Franz Josef Fjord in East Greenland, looking east towards the peak of Teufelschloss and the edge of the Greenland Ice Sheet, from which the icebergs were derived. Photo M. J. Hambrey, 1987.