| Acronym | Meaning |
| GUM | Guam (ISO 3166 Trigram) |
| RFA | Restrictive Fire Area (military) - Royal Field Artillery |
| MADD | Mothers Against Drunk Driving - MyoAdenylate Deaminase Deficiency -Multiply-Add |
| KZ | Kazakhstan (FIPS 10-4 Country Code; ISO 3166 Digram) |
| DODD | U.S. Department Of Defense Directive |
| CAC | California Association Of Criminalists - Chronic Asymptomatic [Disease] Carrier |
| NOSA | NATO OSI Security Architecture |
| NAGPRA | Native American Graves Protection And Repatriation Act |
| HNL | Honduran Lempira (ISO 4217 Currency Code) |
| OPLAN | Operation Plan (also OpPlan) |