| Acronym | Meaning |
| BGR | Bulgaria (ISO 3166 Trigram) |
| KTS | Knight Of The Tower And Sword (of Portugal) |
| TDRS | Tracking Data And Relay Satellite |
| BMU | Bermuda (ISO 3166 Trigram) |
| PNF | Pilot Not Flying (aviation) |
| DIAC | Department Of Immigration And Citizenship (Australia) [1] |
| PTO | Patent & Trademark Office - Please Turn Over |
| J | Joule |
| HEMP | High-Altitude Electromagnetic Pulse |
| AWG | Aruban Guilder (ISO 4217 Currency Code) |