| Acronym | Meaning |
| HRM | His (or Her) Royal Majesty |
| SOA | Service-oriented Architecture |
| HMP | Her Majesty's Prison |
| PSE | Palestine (ISO 3166 Trigram) |
| FO | Faroe Islands (ISO 3166 Digram; FIPS 10-4 Territory Code) -Force Operations (military) - Forward Observer - Frame Optional (military Symbology) |
| JUO | Joint Urban Operations |
| FLTSATCOM | Fleet Satellite Communication System |
| MDG | Madagascar (ISO 3166 Trigram) -UN Millennium Development Goal |
| PA 6 | Nylon 6 (PolyAmide) (similarly For PA 11 |
| RRSP | Registered Retirement Savings Plan (Canada; Roughly Equivalent To The IRA In The U.S.) |