| Acronym | Meaning |
| CN | Canadian National (railway) -China (ISO 3166 Digram) - Comoros (FIPS 10-4 Country Code) |
| STFU | Shut The Fuck Up |
| AGW | Autonomous Guided Weapon |
| PLL | Phase-Locked Loop (electronics) |
| ISR | Intelligence |
| SADL | Situation Awareness Data Link (saddle) - Structural Architecture Description Language |
| FOS | Florida Ornithological Society - Full Operational Status |
| SC | Sardinian Language (ISO 639-1 Code) |
| BAT | Basic Aid Training |
| VAO | Vienna Art Orchestra |