| Acronym | Meaning |
 | OSD | U.S. Office Of The Secretary Of Defense |
| OTO | Ordo Templi Orientis (Latin |
| BC | Before Christ - Blind Copy (in Emailers) - Boston College -Botswana (FIPS 10-4 Country Code; From Bechuanaland) - British Columbia (postal Symbol) |
| MODEM | Modulator-Demodulator |
| MG | Machine Gun -Madagascar (ISO 3166 Digram) -Major General -Mongolia (FIPS 10-4 Country Code) -Morris Garage |
| JFHQ | NCR -Joint Force Headquarters National Capital Region |
| UPU | Universal Postal Union |
| MIMPT | Member Of The Institute Of Maxillofacial Prosthetists And Technologists |
| WTO | World Trade Organization |
| PFLAG | Parents |
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