| COSAC | Conference of Community and European Affairs Committees of Parliaments of the European Union Konferenz der Europaausschüsse der nationalen Parlamente |
| ECU | European Cartographic Union |
| EBU | European Broadcasting Union |
| CEU | Central European Union [engl.] |
| EUREAU | European Union of National Associations of Water Suppliers and Waste Water Services Brüssel, http://www.eureau.org |
| CM | Congregation of the Mission |
| AUU | Aurukun Mission Australien, Queensland [Internationaler Airport Code] |
| BGT | Border Gateway Protocol [engl.] |
| BIS | Border Intermediate System [engl.] |
| CBT | Cross Border Trade [engl.] Grenzüberschreitender Handel |
| ABR | Area Border Router [engl.] |
| CBL | Cross Border Leasing [engl.] Leasinggeschäfte mit ausländischen Unternehmen |
| BCIS | Border Crossing Information System |
| BGP | Border Gateway Protocol [Internet] |
| MCC | Mission Control Center |
| GEM | Giotto Extended Mission |
| CBI | Coordinated Border Infrastructure [Programme] [engl.] Amerikanisches Verkehrsprogramm |
| BGP | Border Gateway Router Protocol [engl.] Teil des Layer 3 nach ISO, z.B. bei Gigabit-Ethernet, im Internet RFC 1771 und 2545 |
| ISPM | International Solar Polar Mission |
| SRT | Shuttle Radar Topography [Mission] |
| MPE | Mission to Planet Earth [Weltraum] |
| MPCS | Mission Planning and Control Station |
| CMCC | Central Mission Control Centre [ESA] |
| MINURSO | Mission der Vereinten Nationen für die Organisation eines Referendums in der Westsahara |
| UNITE HERE | Union of Needletrades, Industrial, and Textile Employees [UNITE] and the Hotel Employees and Restaurant Employees Union [HERE] New York City, [NY], http://www.unitehere.org |
| OAA | Old Age Assistance [engl.] Hilfe für ältere Menschen |
| DA | Directory Assistance |
| TAC | Technical Assistance Committee |
| STDA | Streettalk Directory Assistance |
| DSA | Dial System Assistance |
| TAB | Technical Assistance Board bei den Vereinten Nationen |
| ETAS | Emergency Technical Assistance |
| PDA | Personal Digital Assistance |
| TAUN | Technical Assistance of the United Nations |
| SCAT | Stromberg-Carlson Assistance Team |
| ESAC | Electronic Surveillance Assistance Center |
| OSAC | Operator Services Assistance Center |
| AAC | Apple Assistance Center [engl.] Anfragestelle beim Computerhersteller Apple |
| DACS | Directory Assistance Charging System |
| DAS | Directory Assistance Service [engl.] |
| RTAC | Regional Technical Assistance Center |
| ISAF | International Security Assistance Force |
| CALEA | Communications Assistance for Law Enforcement Act [engl.] Amerikanische Gesetzes-Initiative zum Abhören von Breitbandverbindungen |
| EPTA | Expanded Program of Technical Assistance |
| ICAS | Information Communication Assistance System |
| CITAB | Computer Instruction and Training Assistance for the Blind |
| TACIS | Technical Assistance to the Commonwealth of Independent States Technische Hilfe zugunsten der Neuen Unabhängigen Staaten und der Mongolei |
| AMVER | Automated Mutual Assistance Vessel Rescue System |
| MU | Musicians' Union |
| UC | Union Carbide |