| Acronym | Meaning |
| 4WD | Four Wheel Drive (cf. AWD) |
| WEZ | Weapon Engagement Zone |
| WLN | Walloon Language (ISO 639-2 Code) |
| SGML | Standard Generalized Markup Language |
| J2EE | Java 2 Platform |
| HBV | Hepatitis B Virus |
| GULCR | Grupo De Usuarios De Linux De Costa Rica |
| ESPN | Entertainment And Sports Programming Network |
| HHD | Humanitatum Doctor (Latin |
| HM | Heard Island And McDonald Islands (ISO 3166 Digram; FIPS 10-4 Territory Code) |