格陵兰冰原是覆盖着格陵兰近80%，约171万平方公里的大片冰原。这是全球第二大的冰原，仅次于南极冰原。格陵兰冰原的南北方向长2400公里，最阔达1100公里，位于更北边的北纬77°。冰的平均海拔高2135米。 冰一般厚于2公里，最厚点多于3公里。这并非格陵兰唯一的冰块，亦有独立的冰川及冰盖，覆盖周边的7.6-10万平方公里。一些科学家相信全球暖化会将这冰原推向临界点，并于几百年内完全溶解。若整个冰原完全溶解，海平面就会上升7.2米。 大部份沿海城市都会被淹没，细小的岛屿国家（如马尔代夫）从此消失。

The Greenland ice sheet (Greenlandic:Sermersuaq) is a vast body of ice covering 1,710,000 square kilometres (660,000 sq mi), roughly 80% of the surface of Greenland.

It is the second largest ice body in the world, after the Antarctic Ice Sheet. The ice sheet is almost 2,400 kilometres (1,500 mi) long in a north-south direction, and its greatest width is 1,100 kilometres (680 mi) at a latitude of 77°N, near its northern margin. The mean altitude of the ice is 2,135 metres (7,005 ft). The thickness is generally more than 2 km (1.2 mi) and over 3 km (1.9 mi) at its thickest point. It is not the only ice mass of Greenland – isolated glaciers and small ice caps cover between 76,000 and 100,000 square kilometres (29,000 and 39,000 sq mi) around the periphery. If the entire 2,850,000 cubic kilometres (684,000 cu mi) of ice were to melt, it would lead to a global sea level rise of 7.2 m (24 ft). The Greenland Ice Sheet is sometimes referred to under the term inland ice, or its Danish equivalent, indlandsis. It is also sometimes referred to as an ice cap.