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,. What does EFX mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: EFX. With almost all Asian currencies now available to trade on electronic platforms, internal pressure on treasury to adopt eFX trading is mounting. What is EFX ? There may be more than one meaning of EFX , so check it out all meanings of EFX one by one. What does EFX mean? EFX means “Effects”.