| Acronym | Meaning |
| ZIP | Zoning Improvement Plan Code |
| LYD | Libyan Dinar (ISO 4217 Currency Code) |
| OIOC | Oriental & India Office Collections (in The British Library) |
| J9 | Joint Public Affairs Directorate (Civilian-Military Cooperation) |
| MEF | U.S. Marine Expeditionary Force - Minimum Essential Facility - Mission Essential Force |
| MICV | Mechanised Infantry Combat Vehicle |
| BRS | Battlefield Reasoning System |
| NAVFOR | Naval Force |
| SEU | Single Event Upset (solid State Physics) - Slightly Enriched Uranium - Special Evidence Unit |
| INLA | Irish National Liberation Army |