| Acronym | Meaning |
| LULU | Locally Unwanted Land Use (urbanism) |
| GU | Guam (postal Symbol; ISO 3166 Digram) |
| NYO | National Youth Orchestra Of Great Britain |
| TC | Teracoulomb - Turks And Caicos (ISO 3166 Digram) - United Arab Emirates (FIPS 10-4 Country Code; From Trucial Coast States) |
| OSETI | Optical SETI |
| CB | Cambodia (FIPS 10-4 Country Code) -Citizens' Band Radio |
| NP | Nepal (ISO 3166 And FIPS 10-4 Country Code Digram) |
| JCATS | Joint Conflict And Tactical Simulation (djay-catts) |
| JEFX | Joint Expeditionary Force EXperiment |
| JB | Junior Branch |