| Acronym | Meaning |
| KI | Gikuyu Language (ISO 639-1 Code) |
| DECSIM | Model DEComposition And SIMulation Algorithm - Directed Energy Combat SIMulation |
| AYBABTU | All Your Base Are Belong To Us |
| COM | Comoros (ISO 3166 Trigram) -Component Object Model |
| GLV | Manx Language (ISO 639-2 Code) |
| DCAA | (U.S.) Defense Contract Audit Agency |
| AAV | Amphibious Assault Vehicle |
| BU | Bulgaria (FIPS 10-4 Country Code) - Burma (ISO 3166 Digram; Obsolete Since 1989) |
| CSA | Canadian Space Agency - Canadian Standards Association - Child Support Agency - Command Staff Advisor - Community-supported Agriculture - Confederate States Of America - Corps Storage Area -Czech Airlines |
| TWN | Republic Of China (Taiwan) (ISO 3166 Trigram) |