| JMA | Japan Meteorological Agency |
| EG | Japan Asia Airways [IATA-Airline-Code/ Japan] |
| NU | Japan Transocean Air [IATA-Airline-Code/ Japan] |
| JD | Japan Air System [IATA-Airline-Code/ Japan] |
| JL | Japan Airlines [IATA-Airline-Code/ Japan] |
| 3X | Japan Air Commuter [IATA-Airline-Code/ Japan] |
| NQ | Air Japan [IATA-Airline-Code/ Japan] |
| ICES | International Council for the Exploration of the Sea Internationaler Rat für Meeresforschung |
| SEI | Space Exploration Initiative |
| OExP | Office of Exploration [NASA] |
| BAe | British Aerospace [engl.] |
| BFM | Mobile Aerospace Airport USA, Alabama [Internationaler Airport-Code] |
| ARP | Aerospace Recommended Practice [engl.] Standards und Normen in der Raumfahrt |
| AGE | Aerospace Ground Equipment [engl.] Bodeneinrichtungen für die Raumfahrt |
| BBAA | Berlin-Brandenburg Aerospace Allianz e.V. Potsdam, http://www.bbaa.de |
| ASD | AeroSpace and Defence Industries Association of Europe Brüssel, http://www.asd-europe.org |
| ASTR | Aerospace Systems Test Reactor [engl.] |
| JAL | Japan Airline |
| J | Japan - Länderkürzel |
| JIS | Japan Industrial Standards |
| IIJ | Internet Initiative Japan |
| POSI | Promotion Conference for OSI, Japan |
| BOJ | Bank of Japan [engl.] |
| JST | Japan Standard Time |
| JPN | Japan - Olympische Länderkennung |
| JP | Japan, Länderkennung bei Internetadressen |
| JVC | Victor Company of Japan Friedberg, http://jdl.jvc-europe.com |
| LEA | Law Enforcement Agency |
| RA | Radiocommunications Agency |
| JECC | Japan Electronic Computer Company |
| JESA | Japan Engineering Standard Association |
| JUNET | Japan/Japanese UNIX Network |
| EIAJ | Electronics Industry Association of Japan |
| XM | J-Air [IATA-Airline-Code / Japan] |
| Bull. Biogeogr. Soc. Jpn. | Bulletin of the Biogeographical Society of Japan Zeitschrift |
| CIA | Central Intelligence Agency |
| CNA | Central News Agency |
| CSA | Cyber Security Agency, EU |
| IEA | International Energy Agency Paris, http://www.iea.org |
| DCA | Defense Communications Agency |
| DEA | Drug Enforcement Agency |
| E.N.A. | European news agency Brüssel, http://www.european-news-agency.com |
| MCA | Medicine Control Agency medizinische Aufsichtsbehörde Großbritanniens |
| REA | Rail Express Agency |
| DLA | Defense Logistics Agency |
| EPA | Environmental Protection Agency Washington, DC, http://www.epa.gov |
| NSA | National Security Agency Fort Meade, http://www.nsa.gov |
| EDA | European Defence Agency Brüssel, http://www.eda.europa.eu |
| UTA | United Talent Agency |
| JH | Harlequin Air [IATA-Airline-Code/ Japan] |