| Am. | Amateur |
| ATV | Amateur-TV [engl.] Bildübertragung durch Funkamateure |
| DATV | Digital Amateur Television |
| HABV | Hessischer Amateur-Box-Verband Edertal, http://www.boxen-hessen-verband.de |
| DABV | Deutscher Amateur-Box-Verband Kassel, http://www.boxverband.de |
| DARC | Deutscher Amateur-Radio Club e.V. Baunatal, http://www.darc.de |
| AAA | Amateur Athletic Association [engl.] Brit. Verband der Athletik-Amateure, http://www.englandathletics.org |
| FASC | Future of the Amateur Service Committee |
| FINA | Federation Internationale de Natation Amateur http://www.fina.org |
| RATS | Radio Amateur Telecommunications Society |
| NABBA | National Amateur Bodybuilding Association Lahnau-Dorlar, http://www.nabba.de |
| IAAF | International Amateur Athletic Federation |
| IARP | International Amateur Radio Permission |
| IARU | International Amateur Radio Union |
| APA | Amateur Press Association [engl.] |
| CARA | Computer Aided Radio Amateur |
| ATV | Advanced/Amateur Television [engl.] |
| ATM | Amateur Telescope Maker [engl.] |
| AAU | Amateur Athletic Union [engl.] http://image.aausports.org |
| OSCAR | Orbiting Satellite Carrying Amateur Radio |
| RNARS | Royal Navy Amateur Radio Society |
| SARTG | Scandinavian Amateur Radio Teleprinter Group |
| TAPR | Tucson Amateur Packet Radio Group |
| AMTOR | Amateur Microcomputer Teleprinting Over Radio [engl.] |
| ICARE | International Council for Amateur Radio in Education |
| COARA | Communication of Oita Amateur Research Association |
| ARDF | Amateur Radio Direction Finding [engl.] |
| ARTOB | Amateur Radio Transponder on Balloon [engl.] |
| HAREC | Harmonized Amateur Radio Examination Certificate |
| BARC | Baltimore Amateur Radio Club [engl.] Amerikanische Funkamateure |
| VADCG | Vancouver Amateur Digital Communications Group |