Nix may refer to:
- The enemy from Final Fantasy V.
- The enemies from Final Fantasy XI.
- The boss from Final Fantasy XIII.
- The enemy from Final Fantasy XIV.
- The enemy from Final Fantasy Legend III.
- The enemy from Final Fantasy Dimensions.
Nix and Nixe (and Nixie) are types of river merman and mermaid who may lure men to drown, like the Scandinavian type, akin to the Celtic Melusine and similar to the Greek Siren. Nixes in folklore became water sprites who try to lure people into the water. The males can assume many different shapes, including that of a human, fish, and snake. The females with the tail of a fish. When they are in human forms, they can be recognized by the wet hem of their clothes. The Nixes are portrayed as malicious in some stories but harmless and friendly in others.The German