Upernavik Archipelago is a vast coastal archipelago in the Avannaata municipality in northwestern Greenland, off the shores of northeastern Baffin Bay. The archipelago extends from the northwestern coast of Sigguup Nunaa peninsula in the south at approximately 71°50′N 56°00′W to the southern end of Melville Bay in the north at approximately 74°50′N 57°30′W.