| Acronym | Meaning |
| LAV | Latvian Language (ISO 639-2 Code) |
| FXX | Metropolitan France (ISO 3166 Trigram; Obsolete 1997) |
| AIDS | Acquired Immune Deficiency Syndrome |
| TSL | Transportation Security Laboratory |
| PLCC | Plastic Leaded Chip Carrier (electronics) |
| SWAP | Surface Waters Acidification Programme |
| OS | Osmium |
| JAFT | Just A Field Test |
| DFAS | (U.S.) Defense Finance And Accounting Service |
| UUID | Universally Unique Identifier (see Also GUID) |