Alanngorsuaq Fjord (Danish: Kobberminebugt) is a fjord in the Kujalleq municipality in southern Greenland. At the mouth of the fjord the coastline of southwestern Greenland turns to the east towards Qaqortoq.
The fjord is 40 km (24.9 mi) long,[1] with an east-north-east − west-south-west orientation, opening into the Labrador Sea. There are several oblong, uninhabited islands in the inner part of the fjord, its mouth widening into a 17 km (10.6 mi) bay at the confluence with the Labrador Sea[2] at approximately .
The shores of the fjord are uninhabited. Arsuk is the closest settlement, located just beyond the border with the Sermersooq municipality, approximately 30 km (18.6 mi) to the north of the fjord mouth.