| Abbreviation | Definition |
|---|---|
| FIYB | Friends of the Ithaca Youth Bureau |
| FLB | Financial Literacy Bureau |
| FOB | Field Operations Bureau |
| FSB | Fox Security Bureau |
| FSOB | Financial Services Ombudsman Bureau |
| FSSB | Foreign Studies Service Bureau |
| FSTB | Financial Services and the Treasury Bureau |
| FSTB | Financial Services Treasury Bureau |
| FSTB | Fire Service Training Bureau |
| FYSB | Family and Youth Services Bureau |
| FYSB | Family Youth Services Bureau |
| GAB | Global Accreditation Bureau |
| GBI | GA Bureau of Invest |
| GBI | GA Bureau of Investigation |
| GBI | Georgia Bureau Investigator |
| GCCB | Gulf Coast Collection Bureau |
| GCEB | Gauteng Convention and Event Bureau |
| GIB | good in the bureau |
| GNTB | Garda National Traffic Bureau |
| GRB | Graduate Recruitment Bureau |