| Acronym | Meaning |
 | AOA | Argonne National Laboratory -Angolan Kwanza (ISO 4217 Currency Code) -Award Of Arms (heraldry) |
| TRP | Target Reference Point -Time Of Reporting |
| AA | Achieved Availability - Alcoholics Anonymous -Armed Forces Americas (postal Symbol) - Aruba (FIPS 10-4 Territory Code) -Assembly Area - Automobile Association- Avenue Of Approach |
| VNV M/C USA | Viet Nam Vet's Motorcycle Club USA |
| I/ITSEC | Interservice/Industry Training |
| ECS | Emergency Contact System - Enhanced Chip Set (computing) - EOSDIS Core System - Extended Chip Set (computing) |
| ZH | Chinese Language (ISO 639-1 Code) |
| MIS | Management Information Systems - Museum Information System |
| MSA | Malay Language (ISO 639-2 Code) |
| COB | Close Of Business [day] |
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