| Acronym | Meaning |
| TPTB | The Powers That Be (often Used To Refer To The People Responsible For The Content Of TV Series Or Movies) |
| AJ | Attojoule |
| BI | Burundi (ISO 3166 Digram) |
| TRANSCOM | U.S. Transportation Command |
| ARNET | Acquisition Reform Network |
| ARPA | Advanced Research Projects Agency |
| NOAF | Norwegian Air Force |
| BSOD | Blue Screen Of Death (distinct From BSD) |
| TSN | Tswana Language (ISO 639-2 Code) |
| BIF | Burundian Franc (ISO 4217 Currency Code) |