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. Historically, G. antarcticus was known to scientists only from dead specimens caught by fishermen and remains found in the bellies of larger animals. However, in December 2024, a free-swimming live squid was captured on video at 7,000 feet by a remotely operated vehicle owned by the Schmidt Ocean Institute making a film for National Geographic.