Nasaasaaq ([nasaːsɑːq̚] Danish: Kællingehætten) is a 784-metre-high (2,572 ft)[1] prominent mountain in the Qeqqata municipality in western Greenland.

It is located on the mainland of Greenland, immediately to the southeast of Sisimiut on the northern coast of Amerloq Fjord, a tributary of Davis Strait.

The range flattens considerably towards the east in the area of Kangaamiut dike swarm north of Kangerlussuaq, due to pressure exerted by the icesheet for long periods in the past.

The tough, 160-kilometre-long (99 mi) Arctic Circle Race takes place each winter, with the trail partially overlapping with the Polar Route from Sisimiut to Kangerlussuaq.

[5] The Polar Route passes through the saddle between Nasaasaaq and the much lower Alanngorsuaq mountain to the north, with the summit of the latter sometimes visited by way of a variant.