| Acronym | Meaning |
| IETF | Internet Engineering Task Force |
| SZ | Swaziland (ISO 3166 Digram) - Switzerland (FIPS 10-4 Country Code) |
| PTAL | Public Transport Accessibility Level |
| COIN | Counter-Insurgency (military) |
| NEC | Network-Enabled Capability |
| HAT | Haitian Creole Language (ISO 639-2 Code) |
| GA | Gabon (ISO 3166 Digram) - The Gambia (FIPS 10-4 Country Code) - Georgia (postal Symbol) - Gigaampere |
| SOT | Sotho Language (ISO 639-2 Code) |
| FILO | First In |
| NIC | Network Interface Card -Nicaragua (ISO 3166 Trigram) |