| Qaarsorsuatsiaq | |
| Map: | Greenland |
| Archipelago: | Upernavik Archipelago |
| Location: | Greenland |
| Coordinates: | 73.1833°N -71°W |
| Country: | Greenland |
| Country Admin Divisions Title: | Municipality |
| Country Admin Divisions: | Avannaata |
Qaarsorsuatsiaq Island (old spelling: Qaersorssuatsiaq) is an island in Avannaata municipality in northwestern Greenland.
Qaarsorsuatsiaq Island is located in the outer belt of islands in Tasiusaq Bay, in the south-central part of Upernavik Archipelago. The inner waterways of Tasiusaq Bay separate it from Innaarsuit Island in the east. Several skerries buffer the western coast of the island.[1] The highest point on the island is Cuthbert Peak in the west, reaching 320m (1,050feet).[1]