Ectoplasm may refer to:
- The enemy from Final Fantasy XIV.
- The enemy ability from Final Fantasy Tactics.
- The ability from Final Fantasy Record Keeper.
Ectoplasm is a term coined by Charles Richet to denote a substance or spiritual energy "exteriorized" by physical mediums. Ectoplasm is said to be associated with the formation of spirits. Ectoplasm is considered to be a hoax, made from cheesecloth, gauze or other natural substances.