| Acronym | Meaning |
| URD | User Requirements Document |
| HR | Croatian Language (ISO 639-1 Code) |
| TCAA | Top Counter-Assault Agents |
| LTG | Lieutenant General -Lightning (METAR Code) |
| DTO | Disruptive Technology Office (was ARDA) |
| VIN | Vehicle Identification Number (ISO 3779) |
| FX | Firefox -Metropolitan France (ISO 3166 Digram; Obsolete 1997) |
| BMEWS | Ballistic Missile Early Warning System (bee-mews) |
| OHC | OverHead-Cam Engine |
| GIP | Gibraltar Pound (ISO 4217 Currency Code) |