| Acronym | Meaning |
| DIFAR | DIrectional Frequency Analysis And Recording |
| BIOS | Basic Input/Output System - British Institute Of Organ Studies |
| QR | Quake Rally - Qualitative Reasoning - Queensland Rail - Queen's Rangers - Quick Release - Quiet Riot -Qatar Airways (IATA Airline Designator) |
| UWT | Under Water Telephone |
| CORG | (U.S.) Combat Operations Research Group |
| HSMAD | Human Science/Modeling And Analysis Data |
| BARD | Binational Agricultural Research And Development Fund (between The US And Israel) |
| VMN | VentroMedial Nucleus (neurophysiology) |
| ACES | Aerolineas Centrales De Colombia |
| HAU | Hausa Language (ISO 639-2 Code) |