| Acronym | Meaning |
| AOA | Argonne National Laboratory -Angolan Kwanza (ISO 4217 Currency Code) -Award Of Arms (heraldry) |
| HAZMAT | Hazardous Materials |
| F/W | Fixed Wing |
| UPI | United Press International |
| PCR | Polymerase Chain Reaction |
| PAHO | Pan American Health Organization |
| NCW | Network Centric Warfare |
| OCR | Optical Character Recognition |
| ATB | Active Time Battle -British Antarctic Territory (ISO 3166 Trigram; Merged With AQ In 1979) |
| MKD | Macedonian Language (ISO 639-2 Code) |