| Acronym | Meaning |
| DIF | Data Interchange Format |
| PTUI | Plain-Text User Interface (pa-too-ey) (cf CLI) |
| LT | Lithuanian Language (ISO 639-1 Code) |
| BASF | Badische Anilin Und Soda Fabrik (German Chemicals Company) |
| HL | Holding Line |
| SIS | UK Secret Intelligence Service (also Known As MI6) |
| CPT | Contingency Planning Team |
| ICNAF | International Commission For The Northwest Atlantic Fisheries (became NAFO In 1978) |
| SUN | Sundanese Language (ISO 639-2 Code) |
| WCL | World Confederation Of Labour |