| ACE | Allied Command, Europe [engl.] vormalige NATO-Einheit, heute ACO |
| ACO | Allied Command Operations [engl.] NATO-Einheit, früher ACE |
| CEEC | Central Europe and Eastern Europe Countries [engl.] Die Länder des zentralen und östlichen Europas |
| CD | Corps Diplomatique [frz.] |
| PC | Peace Corps |
| CCC | Civil[ian] Conservation Corps |
| ANC | Army Nurse Corps |
| CGFR | Corps de Gardes Frontières suisse [frz.] Grenzschutztruppe der Schweiz |
| ROTC | Reserve Officers' Training Corps |
| K9 | canine [K9 corps-army dogs] Hundestaffel |
| USMC | United States Marine Corps |
| AAP | Allied Administrative Publication |
| AIB | Allied Irish Bank [engl.] Irisches Bankhaus |
| AMF | Allied Mobile Force [engl.] |
| AMO | Allied Meteorological Office [engl.] Wetterdienst der NATO |
| ATAF | Allied Tactical Air Force [engl.] |
| ACIU | Allied Central Interpretation Unit [engl.] Medmenham |
| SHAEF | Supreme Headquaters, Allied Expeditionary Force |
| AQAP | Allied Quality Assurance Publications [engl.] NATO-Standards für die Qualitätssicherung |
| RIX | Rapid Ion Extraction |
| REM | Rapid Eye Movement |
| R/C | Reaction Center |
| RST | Rapid Solidification Technology |
| RAP | Rapid Application Prototyping |
| RTO | Rapid Thermal Oxidation |
| RIV | Rapid Intervention Vehicle Schnelles Einsatz-Fahrzeug |
| RAD | Rapid Application Development |
| RTP | Rapid Thermal Processing |
| RTP | Rapid Transport Protocol |
| RPM | Rapid Prototyping Module |
| RAD | Rapid Access Disk |
| RPD | Rapid Prototyping Development |
| RTA | Rapid Thermal Annealing |
| BRT | Bus Rapid Transport [engl.] Beschleunigungsmassnahmen für den öffentlichen Busverkehr |
| RLA | Rapid Lamp Annealing |
| LRP | Linear Reaction Path |
| NRA | Nuclear Reaction Analysis |
| RRL | Reaction-Rate-Limited |
| SCRF | Self Consistent Reaction Field |
| IRC | Intrinsic Reaction Coordinate |
| OER | Oxygen Evolution Reaction |
| HER | Hydrogen Evolution Reaction |
| PCR | Polymerase Chain Reaction |
| ETR | Electron Transfer Reaction |
| ORR | Oxygen Reduction Reaction |
| RCS | Reaction Control System |
| KER | Kolbe Electrosynthesis Reaction |
| IRP | Intrinsic Reaction Path |
| RF | Reaction Forces [NATO] |
| RSMW | Rapid Scanning Multiple Wavelength |