| Abbreviation | Definition |
|---|---|
| AGFH | Association Généalogique Flandre Hainaut |
| AGGA | Alberta Greenhouse Growers Association |
| AGGA | Australian Ginseng Growers Association (Huonville, Tasmania, Australia) |
| AGGA | Australian Glass and Glazing Association |
| AGGL | Association des Girl Guides Luxembourgoises |
| AGHA | American Guinea Hog Association |
| AGHK | Association for Geoconservation Hong Kong |
| AGILE | Association of Geographic Information Laboratories in Europe |
| AGJA | Arizona Gymnastics Judges Association |
| AGJA | Asian Gaming Journalist Association |
| AGJA | Asian Gaming Journalists Association |
| AGJB | Association de Gymnastique du Jura Bernois |
| AGLA | Association Of Ghanaian Lawyers Of America |
| AGLO | Association of Greek Letter Organizations |
| AGLTA | Australian Gay and Lesbian Tourism Association |
| AGMA | American Gaited Mule Association |
| AGMA | American Gear Manufacturer Association |
| AGMA | American Gear Manufacturers Association |
| AGMA | Association of Greater Manchester Authorities |
| AGMC | Association du Génie Militaire Canadien |