Abkürzungen "A"
| AARC | Aruba Amateur Radio Club  |
| AARC | Accra Amateur Radio Club |
| AATiS | Arbeitskreis Amateurfunk und Telekommunikation in der Schule |
| AAW | Antarctic Activity Week |
| AB | All Band (Contest) |
| ABC | Australian Broadcasting Corporation |
| ACG | Alabama Contest Group |
| ACMA | Australian Communications and Media Authority |
| ADIF | Amateur Data Interchange Format |
| ADL |
Austrian District Locator |
| Admiralty | Admiralty List of Lights and Fog Signals |
| ADXB | Austrian DX Board |
| AFVL | Amateur Funk Verein Liechtenstein |
| AGCW | Arbeitsgemeinschaft Telegraphie |
| AGDX | Arabian Gulf DX group |
| ALARA | Australian Ladies Amateur Radio Association |
| AMISOM | African Union Mission in Somalia |
| AMRA | Association Mosellane des Radio Amateurs |
| AMRS |
Austrian Military Radio Society |
| AMSAT | Radio Amateur Satellite Corporation |
| ANARE | Australian National Antarctic Research Expeditions |
| ANZAC | Australian and New Zealand Army Corps |
| AOTA |
Airfields on the Air |
| ARA | Amateurs Radio Algeriens |
| ARAF | Associação dos Radioamadores de Florianopolis |
| ARAL | Almaty Amateur Radio League |
| ARAM | Associação de Radioamadores do Alto Minho |
| ARARM | Asociacion de Radio Aficionados de la Republica Mexicana |
| ARAT | Association des Radio Amateurs Tunisiens |
| ARBA | Associação de Radioamadores da Beira Alta |
| ARBB | Associação de Radioamadores da Beira Baixa |
| ARC | Associação Radioamadores de Coimbra |
| ARDF | Amateur Radio Direction Finding |
| AREG | Amateur Radio Experimenters Group |
| ARES | Amateur Radio Emergency Service |
| ARFI | Associazione Radioamatori Finanzieri Italiani |
| A.R.I. | Associazione Radioamatori Italiani |
| ARISS | Amateur Radio on the International Space Station |
| ARL | Almaty Radio Amateur League |
| ARLHS | Amateur Radio Lighthouse Society |
| ARM | Amateur Radio Society of Moldova |
| ARMI | Associazione Radioamatori Marinai Italiani |
| ARRAM | Association Royale des Radio Amateurs du Maroc |
| ARRL | Amateur Radio Relay League |
| ARSATC | Amateur Radio Satellite Community |
| ART | Amateur Radio Taipei |
| ARU | Algerian Radio Amateur Union |
| ATNO | All Time New One |
Abkürzungen "B"
| BADARS | Braintree and District Amateur Radio Society |
| BAE | Base Antártica Española |
| BAFARA | Belgian Air Force Amateur Radio Association |
| BARAC | Bishop Auckland Radio Amateur Club |
| BARC | Belize Amateur Radio Club |
| BARG | Bahrain Amateur Radio Group |
| BARS | Bahrain Amateur Radio Society |
| BARTG | British Amateur Radio Teledata Group |
| BAS | British Antarctic Survey |
| BATC | British Amateur Television Club |
| BBT | Bayerischer Bergtag |
| BCA | Belgian Castles Award |
| BCC | Bavarian Contest Club |
| BDARA | Brunei Darussalam Amateur Radio Association |
| BDM | Belgium Digital Mode Club |
| BFRA | Bulgarian Federation of Radio-Amateurs |
| BFSAI | British Forces South Atlantic Islands |
| BIPT | Belgian Institute for Postal Services and Telecommunications |
| BIWOTA |
British Inland Waterways on the air |
| BLOTA |
Boat Lifts on the Air |
| BNetzA | Bundesnetzagentur |
| BOTA | Beaches On The Air |
| BPSK | Binary Phase Shift Keying |
| BRARC | Belgian Railways Amateur Radio Club |
| BRARS | British Railways Amateur Radio Society |
| BRASZ | Budapest Radioamateur Society |
| BSCC | Blacksea Contest Club |
| BYLARA | British Young Ladies Amateur Radio Association |
Abkürzungen "C"
| CARC | Cairns Amateur Radio Club |
| CARF | Canadian Amateur Radio Federation |
| CARS | Cyprus Amateur Radio Society |
| CASHOTA | Castles and Stately Homes on the Air |
| CBARC | Citrus Belt Amateur Radio Club |
| CCAE | European Collins Collector Association |
| CDG | Croatian Digital Group |
| CDXC | Clipperton DX Club |
| CDXG | Charente DX Group |
| CEPT |
European Conference of Postal and Telecommunications Administrations |
| CHOTA |
Churches & Chapels on the Air |
| CIsA | Canadian Islands Awards |
| CISA | Castles in Serbia Awards |
| CISAR | Centro Italiano Sperimentazione Attivita Radiantistiche |
| CLHA | Croatian Lighthouse Award |
| COTA | Castles on the Air |
| COTA | Carabinieri on the Air |
| CPDXG | Chilean Pacific DX Group |
| CRA | China Radio Association |
| CRAC | Chinese Radio Amateur's Club |
| CRC | Czech Radio Club |
| CRD | Club Radio Durnal |
| CRRL | Canadian Radio Relay League |
| CRSA | Chinese Radio Sports Association |
| CSA | Canadian Space Agency |
| CSDXC | Czechoslovak DX Club |
| CTARL | Chinese Taipei Amateur Radio League |
| CUWS | Cambridge University Wireless Society |
| CWJF | Grupo Juizforano de CW |
| CWOPS | The CW Operator's Club |
Abkürzungen "D"
| DADARS | Durham District and Amateur Radio Society |
| DAI | Diploma delle Abbazie Italiane |
| DARC | Deutscher Amateur Radio Club  |
| DARES | Dutch Amateur Radio Emergency Service |
| DCF | Diplôme des Cathédrales de France |
| DCFP | Portuguese Castles Award |
| DCI | Diplomi dei Castelli d’Italia |
| DCL | DARC Community Logbook |
| DCPC | Diploma Castelli Provincia Cuneo |
| DDARS | Denby Dale Amateur Radio Society |
| DDFM | Diplôme des Departements Français de la Metropole |
| DDFP | Diploma de Divulgação das Freguesias Portuguesas |
| DFB | Diploma Faróis Brasileiros |
| DFCF | Diplome des Forts et Chateaux de France |
| DFE | Diploma Faros Españoles |
| DFFA | Diplom dos Farois Farolins e do Algarve |
| DFH | Diploma Fortificacoes Historicas |
| DFP | Diploma Farois Portugueses |
| DIA | Danish Island Award |
| DIB | Diploma Ilhas Brasileiras |
| DICE | Diploma Islas de Chile |
| DID | Deutsches Inseldiplom |
| DIE | Diplom Islas de España |
| DIFM | Diplôme des Iles de la France Métropolitaine |
| DIFO | Diplôme des Iles Françaises d'Outre Mer |
| DIG | Diplom Interessen Gruppe |
| DIP | Diploma das Ilhas Portuguesas |
| DKARS | Dutch Kingdom Amateur Radio Society |
| DLI | Diploma Laghi Italiani |
| DMC | Digital Modes Club |
| DME | Diploma Municipios de España |
| DMHP | Diploma Monumentos Históricos Portuguese |
| DMP |
Diploma dos Municípios Portugueses |
| DOK |
Distrikts-Ortsverbands-Kenner |
| DPF | Diplome of the Provinces of France |
| DPL |
Diploma dos Lagos Portugueses |
| DPLF |
Diplôme des Phares du Littoral Français |
| DTC | Deutscher Telegrafie Contest |
| DTDXA | Digital Thailand DX Association |
| DVA |
Department of Veteran Affairs |
| DXCC | DX Century Club |
Abkürzungen "E"
| EAA | España Award |
| EARS | Emirates Amateur Radio Society |
| ECWARC | Essex CW Amateur Radio Club |
| EDR | Experimenterende Danske Radioamatører |
| EDXC | Ecuador DX Club |
| EFA-DL | Eisenbahn Funkamateure Deutschlands |
| EMC | Electromagnetic Compatibility |
| EMI | Electromagnetic Interference |
| EMV | Elektromagnetische Verträglichkeit |
| EPC | European PSK Club |
| ERA | European Radioamateurs Association |
| ERASD | Egyptian Radio Amateurs Society For Development |
| ERC | European ROS Club |
| ESA | European Space Agency |
| ERAU | Estonian Radio Amateurs Union |
| EUCWA | European CW Association |
| EUDXF | European DX Foundation |
| EURAO | European Radio Amateurs' Organization |
