| Abbreviation | Definition |
|---|---|
| BGA | Brilliantly Gifted Agency |
| BGE | Ballester-Guasp Evaluation |
| BGen | Brigadier General - USMC |
| BGFRS | Board of Governors of the Federal Reserve System |
| BGN | Board of Geographic Names |
| BGO | Bilingual Non-Governmental Organizations |
| BGP | Border Gate Patrol |
| BGP | Brads Guitar Pick |
| BGS | Border Guard Service |
| BHAG | Big Hairy Audacious Goal |
| BHCA | Bank Holding Company Act |
| BHIP | Behavioral Health Integration Project |
| BHO | Barack Hussein Obama |
| BI | Background Investigation |
| BI | Bureau of Investigation |
| BIA | Board of Immigration Appeals |
| BIA | Bureau of Indian Affairs |
| BIC | Business Information Center |
| BII | Business Intelligence Improvement |
| BIMAS | BioInformatics Molecular Analysis Section |