| Abbreviation | Definition |
|---|---|
| FBH | Federal Bureau of Hackers |
| FBI | Federal Bureau Investigators |
| FBI | Federal Bureau of Investigationan |
| FBIC | Federal Bureau of Investigations Connectivity |
| FBINA | Federal Bureau of Investigation National Academy |
| FBN | Federal Bureau of Narcotics |
| FBOP | Federal Bureau Of Prisons |
| FBP | Federal Bureau Of |
| FBP | Federal Bureau of Prisons |
| FBPN | Facilitair Bureau Patiëntenorganisaties Nederland |
| FBS | Federal Bureau of Statistics |
| FBZ | Federal Bureau of Zion |
| FCBU | First Credit Bureau of Ukraine |
| FCCB | First Cyprus Credit Bureau |
| FDB | Flow Design Bureau |
| FEB | Foreign Experts Bureau |
| FECB | Far East Combined Bureau |
| FEIB | Fire and Explosion Investigation Bureau |
| FISB | Foreign Investment Services Bureau (Ministry of Trade and Industry; Maldives) |
| FIVB | Fiji Islands Visitors Bureau |