| Acronym | Meaning |
| AFAIK | As Far As I Know |
| STANAG | (NATO) Standardisation Agreement |
| ARSC | Arctic Region Supercomputing Center |
| JPL | Jet Propulsion Laboratory |
| MAC | Macao (ISO 3166 Trigram) -U.S. Military Airlift Command (1966-1992) |
| HMCE | Her Majesty's Customs And Excise |
| AVI | Audio Video Icon |
| IMU | International Mathematical Union |
| USTRANSCOM | United States Transportation Command |
| ACMC | (U.S.) Assistant Commandant Of The Marine Corps |