| Acronym | Meaning |
| NPC | National Postgraduate Committee - National Provincial Championship (New Zealand Rugby Competition) - Navigation Planning Chart - Non-Player Character (role-playing Games) |
| DWIM | Do What I Mean |
| DRET | Defence Research Establishment Toronto (obsolete 2002) |
| UNDP | United Nations Development Programme |
| ADIZ | Air Defence Identification Zone |
| POCD | Post-Operative Cognitive Dysfunction |
| DF | Direct Fire - Direction Finding |
| BN | Bengali Language (ISO 639-1 Code) |
| RE | Rhenium |
| WK | Wake Island (ISO 3166 Digram |