IFX may refer to:
IFX AG or Infineon Technologies AG, a German semiconductor manufacturer KFX/IFX, a joint South Korean and Indonesian program to develop a fighter jet IFX Piranha, video software for Linux Clarisse IFX, a proprietary 3D rendering software IFX, International Flight Training Academy ICAO code Interactive Financial Exchange (IFX), a financial data transfer file format IFX is a name for the current Intel Fortran Compiler
See also FX (disambiguation)