"FX" may refer to:
- FX Networks, a family of cable/streaming channels owned by Disney.
- F/X: Murder by Illusion and F/X 2: The Deadly Art of Illusion, a pair of films about a special effects expert who gets hired by the FBI to fake a mob boss's death.
- F/X: The Series, a TV series based on the movies.
- f(x), a South Korean Girl Group.
FX is also a common abbreviation for Special Effects.
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