Tasersuatsiaq (old spelling: Taserssuatsiaq) is a lake in central-western Greenland, in the Qeqqata municipality.

The lake and the Roklubben Restaurant at its western shore are connected to Kangerlussuaq by a gravel road, one of the very few in Greenland.

[3] In 2025, research by the University of Maine Climate Change Institute reveals that Tasersuatsiaq had browned due to two months of record heat and precipitation in fall 2022, and may not be able to recover from the browning state.

[4] The 2x6km[5] lake is separated from the valleys of Qinnguata Kuussua and Akuliarusiarsuup Kuua, as well as the Kangerlussuaq settlement in the north by a low tundra ridge of Qaarsorsuaq.

On the southern and eastern side it is bounded by a vast highland of Ammalortup Nunaa, the original region artificially populated with 27 muskoxen.