Efflorescence may refer to:
- The enemy ability from Final Fantasy XIII.
- The enemy ability from Final Fantasy XIII-2.
- The enemy ability from Lightning Returns: Final Fantasy XIII.
- The enemy ability from Final Fantasy Record Keeper.
In chemistry, efflorescence (which means "to flower out" in French) is the migration of a salt to the surface of a porous material, where it forms a coating. The essential process involves the dissolving of an internally held salt in water, or occasionally in another solvent. The water, with the salt now held in solution, migrates to the surface, then evaporates, leaving a coating of the salt.