| Acronym | Meaning |
 | NYO | National Youth Orchestra Of Great Britain |
| JFMCC | Joint Force Maritime Component Commander |
| NT | Iraq-Saudi Arabia Neutral Zone (ISO 3166 Digram; Obsolete 1993) - Northern Territory (Australia) (postal Symbol) - Northwest Territories (Canada) (postal Symbol) - National Trust (UK) |
| BIST | Built-In Self-Test |
| ECSC | European Coal And Steel Community (distant Ancestor Of The EU) |
| IMS | Information Management System - International Meat Secretariat - Ion Mobility Spectrometer |
| ARPA | Advanced Research Projects Agency |
| HFAC | Human Factors (aytchfak) |
| BO | Tibetan Language (ISO 639-1 Code) |
| IMU | International Mathematical Union |
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