| Acronym | Meaning |
| TWI | The Welding Institute |
| KVM | Keyboard |
| LNER | London And North Eastern Railway |
| IEC | International Electrotechnical Commission |
| MTV | MainosTeleVisio (Finnish Commercial TV Company) - Music TeleVision |
| NLP | Natural Language Processing - Neuro-Linguistic Programming (pseudoscience) |
| AGARD | Advisory Group For Aerospace Research And Development |
| POR | Proposed Operational Requirement |
| THA | Thailand (ISO 3166 Trigram) |
| ZM | Zeptometre |