FX
- AMD FX
- Athlon 64 FX
- Effects unit
- F. X. Hadi Rudyatmo
- F/X
- F/X2
- FX (Asia)
- FX (Australia)
- FX (Canada)
- FX (Fighter Experimental)
- FX (Greece)
- FX (India)
- FX (Italian TV channel)
- FX (Latin America)
- FX (Polish TV channel)
- FX (Portugal)
- FX (TV channel)
- FX (comics)
- FX (international)
- FX (magazine)
- FX Airguns
- Factor X
- FedEx Express
- Firefox
- Floor (gymnastics)
- Foreign exchange (disambiguation)
- Foreign exchange market
- Foreign exchange service (telecommunications)
- Fox (UK and Ireland)
- Frequent Express
- Fuji Xerox
- GeForce FX series
- Holden 48-215
- Infiniti FX
- JavaFX
- KF-X
- KFX/IFX
- McDonnell Douglas F-15 Eagle
- Negative FX
- Sound effect
- Special effect
- Super FX
- Tecma FX
- Toyota Kijang
- UV Express
- Vol. 4 (Black Sabbath album)