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