EFX may refer to:

• EFX (show), a Las Vegas show
• EFX (album), an album of the show
• Enterprise Framework (EFx), see EFx Factory
• Enerflex Systems, a Canadian company listed as EFX on the Toronto Stock Exchange
• Equifax, a U.S. consumer credit reporting agency listed as EFX on the New York Stock Exchange
• Effects Extension (EFX), a set of digital signal processing extensions for the OpenAL audio API
• .efx, the Everett Efax file format, see List of file formats
• EFX item allocation - a rule for fair allocation of indivisible objects among people with different preferences.

See also

• FX (disambiguation)
• Das EFX, an American hip-hop group

This disambiguation page lists articles associated with the title EFX.
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