| Abbreviation | Definition |
|---|---|
| FAYZ | Fallout Alley Youth Zone |
| FBI | Federated Bastion of Independence |
| FBSI | Federal Bureau of Supernatural Investigation |
| FBW | Flask Of Blood Wine |
| FC | Fantasy Crafts |
| FC | Fusion Commander |
| FC | Future Century |
| FCA | Ferengi Commerce Alliance |
| FCA | Ferengi Commerce Authority |
| FCF | First Contact Freak |
| FCG | Flower Colored Ghost |
| FCM | Future Concept Machine |
| FCSS | Fortaleza Confederacy Star Ship |
| FDD | Fictional Digimon and Digidestined |
| FEAF | Free Erusea Air Force |
| FEAR | First Encounter And Reconnaissance |
| FEAR | Future Events Aren't Real |
| FF | Fatal Future |
| FF | Final Fantasy |
| FFAA | Ferios Fallen Arch Angels |