| Acronym | Meaning |
| NAI | Named Area Of Interest -Network Access Identifier |
| NKVD | Narodnyi Komissariat Vnutrennikh Del (Russian People's Commissariat Of Internal Affairs) (1934-1954) |
| ATC | Air Traffic Control - Air Training Corps - U.S. Air Transport Command (1942-1948) |
| TRANSCOM | U.S. Transportation Command |
| QT | Quentin Tarantino - QuickTime - QuikTrip |
| BLEVE | Boiling Liquid Expanding Vapour Explosion (blevy) |
| TPS | The Pennington School |
| CY | Welsh Language (ISO 639-1 Code) |
| BL | Bolivia (FIPS 10-4 Country Code) -British Leyland |
| TANJ | There Ain't No Justice (used As Expletive In The Ringworld Novels) |