Gonatus antarcticus is a squid in the family Gonatidae.

The species is known with certainty only from southern Atlantic waters but it may have a circum-Antarctic distribution.

[3][4] G. antarcticus occurs in waters of the Southern Ocean.

[5][4] This squid is eaten by several predators in the Southern Ocean, like Albatrosses, Sperm whales, Seals and Penguins.

Based on stable isotopes analysis, this squid may be a top predator on its natural habitat.