Tasiusaq may refer to the following placenames in Greenland:
Tasiusaq, Kujalleq, a settlement in Kujalleq municipality in southern Greenland. Tasiusaq, Avannaata, a settlement in Avannaata municipality in northwestern Greenland. Tasiusaq Bay, a bay in Avannaata municipality in northwestern Greenland.
See also Tasiujaq (disambiguation)