Qeqertaq is a settlement in the Avannaata municipality in western Greenland, located on an island off the southern shore of the Nuussuaq Peninsula in an inlet of Sullorsuaq Strait. Founded in 1830 as Øen, the settlement had 114 inhabitants in 2020.

Avannaata is a municipality of Greenland created on 1 January 2018 from the bulk of the former Qaasuitsup municipality. It encompasses an area of 522,700 km2 and has 10,726 inhabitants.