| Acronym | Meaning |
 | MM | Millimetre |
| AFSC | U.S. Air Force Staff College (obsolete; Replaced With JFSC). - U.S. Air Force Systems Command |
| NWRA | National Wildlife Rehabilitators Association |
| NB | Niobium |
| G2 | Assistant Chief-of-Staff |
| UMI | U.S. Minor Outlying Islands (ISO 3166 Trigram) |
| IWC | International Whaling Commission |
| NFC | National Football Conference |
| PU | Guinea-Bissau (FIPS 10-4 Country Code) -Polyurethane -United States Miscellaneous Pacific Islands (ISO 3166 Digram; Obsolete 1986) |
| VSHORAD | Very Short Range Air Defence |
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