In zoology, a tentacle is a flexible, mobile, elongated organ present in some species of animals.

Tentacle or Tentacles may also refer to:

Tentacle erotica, a type of pornography Tentacle (botany), glandular hairs on the leaves of some species of insectivorous plants such as sundews Tentacles (film), an Italian-American horror film Tentacle (novel), a 2015 novel by Rita Indiana Tentacles (album), a 2009 album by Crystal Antlers Tentacles (novel), a 2009 novel by Roland Smith Squidward Tentacles, a fictional character in the American animated television series SpongeBob SquarePants "Tentacles" (Into the Dark), an episode of the second season of Into the Dark