Look up giant octopus in Wiktionary, the free dictionary.

Giant octopus is a common name for the genus Enteroctopus.

Giant octopus may also refer to:

• Gigantic octopus, a cryptid
• St. Augustine Monster, a globster mistakenly believed to be a gigantic octopus
• Lusca, suggested to be a gigantic octopus
• Mega Shark Versus Giant Octopus, a low budget monster movie produced by The Asylum

See also

• Haliphron atlanticus, thought to be the second largest octopus species
• Kraken, Norse sea monster
• Cthulhu, Lovecraftian horror monster
• Vampire squid, a seemingly cephalopod related to squid and octopuses that feeds off marine snow

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