| Abbreviation | Definition |
|---|---|
| FGS | Fantasy Gaming Society |
| FGW | Federation Of Greedy Wrestlers |
| FGX | Future Gaming Xperience |
| FH | Field House |
| FH | First Half |
| FHAC | Fish Hoek Athletic Club |
| FHSAA | Florida High School Athletic Association |
| FIAAA | Florida Interscholastic Athletic Administrators Association |
| FIBA | Federación Internazionale de Basketball Association |
| FIBS | First Internet Backgammon Server |
| FIBS | Free Internet Backgammon Server |
| FICA | Federation of International Cricketers Association |
| FIDO | Fédération Internationale de DOmino |
| FIESTA | Fun, Innovation, Enthusiasm, Spirit, Teamwork, and Attitude |
| FIF | Five Iron Frenzy |
| FIFA | Federal International Football Association |
| FIFA | Fédération Internationale de Football Association |
| FIFA | International Federation Association of Football |
| FIFA | The Union des Associations Européennes de Football |
| FIG | Fédération Internationale de Gymnastique |