Amoeba (also spelled ameba or amœba) are eukaryotic, generally unicellular organisms falling under various different species, of which are not all directly related. They are characterised primarily by bloblike or amorphous cell shapes, an ability to absorb or engulf prey with their shapeless bodies, and generally able to mitose and split. Plurally, amoeba may be written as amoebae or amoebas.

• See also:
• slime moulds, which include the sometimes gigantic, branching single celled myxogastria;
• protist_(organism), a wastebasket taxon which generally includes many amoeboid organisms;
• Amoeboid (Ratchet And Clank), a fictional alien which embodies many of the hallmark amoeba-like traits
• Reuniclus, a Pokémon which is loosely based on various algae and amoeba.
• Not to be confused with:
• slime
• goo creature, which sometimes display amoeba-like traits, and may ambiguously be tagged as amoebas.
• bacteria, which are prokaryotes, and may serve as a food source or symbiotic with amoebae. This tag is frequently used alongside the amoeba tag.