| Acronym | Meaning |
| WA | Walloon Language (ISO 639-1 Code) |
| FQDN | Fully Qualified Domain Name |
| JSP | Joint Services Publication |
| UPDM | Universit? Popolare Della Multimedialit? |
| DIMM | Dual In-line Memory Module (computing) |
| USNB | United States Naval Base |
| OAC | On Approved Credit |
| HARM | High-speed Anti-Radiation Missile |
| UM | U.S. Minor Outlying Islands (postal Symbol; ISO 3166 Digram) |
| SRD | Science Requirements Document -Surinam Dollar (ISO 4217 Currency Code) |