| Acronym | Meaning |
| COG | Centre Of Gravity - Current Operations Group (military) -Republic Of The Congo (ISO 3166 Trigram) |
| MPEV | Multi-Purpose Engineering Vehicle |
| NSA | U.S. National Security Agency - Naval Support Activity - No Strings Attached |
| TIA | Total Information Awareness Initiative |
| AAPC | Accounting And Auditing Policy Committee |
| SCTP | Stream Control Transmission Protocol |
| TJ | Tajikistan (ISO 3166 Digram) - Terajoule |
| ZL | Zettalitre |
| ISL | Iceland (ISO 3166 Trigram) |
| SCFH | Standard Cubic Foot Per Hour (unit Of Measurement Of Fluid Flow) |