Entertainment
- FX (TV channel), an international cable/satellite television network (see article for channels by country)
- F/X, a movie set in the world of special effects
- F/X: The Series, a television program based on the movie
- FX (comics), a comic book series published by IDW, drawn by artist John Byrne
- "FX", a song by Black Sabbath on the album Black Sabbath Vol. 4
- f(x) (band), South Korean girl group
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