| Acronym | Meaning |
| BRN | Brunei (ISO 3166 Trigram) |
| SWG | Surface Warfare Group - Symbology Working Group |
| RTP | Real-time Transport Protocol |
| VTEC | Variable Valve Timing And Electronic Lift Control |
| HEAT | High Explosive Anti-Tank (ammunition) |
| FRY | West Frisian Language (ISO 639-2 Code) |
| AFQT | Armed Forces Qualification Test |
| SCAP | Supreme Commander Allied Powers (Allied Occupation Of Japan) |
| ATA | Advanced Technology Attachment (IBM Personal Computer) - Afghan Transitional Authority - Allen Telescope Array -Antarctica (ISO 3166 Trigram) |
| RPA | Regional Plan Association |