| Acronym | Meaning |
| JANUS | Joint Academic Network Using Satellites (UK) - Joint Army Navy Uniform Simulation -Joint Army-Navy Staff - Just ANother Useless Simulation (Note: The U.S. Army Janus Simulation Is Not An Acronym) |
| NATO | National Association Of Theatre Owners - North Atlantic Treaty Organisation |
| PRBO | Point Reyes Bird Observatory |
| MMO | Massively Multiplayer Online (computer Game) |
| ACM | Many |
| WACC | Weighted Average Cost Of Capital (accounting) |
| HQDA | HeadQuarters |
| BLZ | Belize (ISO 3166 Trigram) |
| AFA | U.S. Air Force Academy |
| CBOL | Consortium For The Barcode Of Life |