Plankton is a generic term for many organisms that live in bodies of water.

Plankton may also refer to: Aerial plankton, atmospheric analogue to oceanic plankton Phytoplankton, the autotrophic component of the plankton community Zooplankton, the heterotrophic component of the plankton community

Entertainment Plankton, a character from the Nickelodeon cartoon show SpongeBob SquarePants Plankton: The Movie, a 2025 film featuring the character Plankton, a 1994 video from Alvaro Passeri, retitled Creatures from the Abyss Plankton Man, the stage name of Mexican musician Ignacio Chavez Plankton Records, label of Drottnar and other bands