| Abbreviation | Definition |
|---|---|
| FWO | Fantasy Wrestling Online |
| FWQ | Freeride World Qualifier |
| FWS | Fight With Saws |
| FWSI | Far West Ski Association |
| FX | Fast and Xtreme |
| FY | Formula Yamaha |
| FYBA | Fairfield Youth Baseball Association |
| FYC | Faithful Youth Challengers |
| FYFA | Fairfax Youth Fastpitch Association |
| FYL | Forsyth Youth League |
| FYSA | Fairbanks Youth Soccer Association |
| FYSA | FishHawk Youth Sports Association |
| FYSA | Flatonia Youth Soccer Association |
| FYSA | Florida Youth Soccer Association |
| FYSA | Fluvanna Youth Soccer Association |
| FYSA | Foothills Youth Soccer Association |
| FYSA | Fridley Youth Sports Association |
| FYSD | Free Youth Soccer Drills |
| FZ | Fun Zoom |
| G | Gambit |