| Abbreviation | Definition |
|---|---|
| AGMD | Association of Gastrointestinal Motility Disorders |
| AGMT | Association Genevoise du Musée des Tramways |
| AGNA | Alberta Gerontological Nurses Association |
| AGNS | Association of Graduate Nursing Students |
| AGOF | Association des Gynecologues Obstetriciens en Formation |
| AGPA | American Group Psychotherapy Association |
| AGPP | Association of Greek Producers of Phonograms |
| AGRA | Arizona Gay Rodeo Association |
| AGRY | Association de Gymkhana Richelieu Yamaska |
| AGS | Association for Gravestone Studies |
| AGSI | Association for Global Strategic Information |
| AGSI | Association of Garda Sergeants and Inspectors |
| AGSM | Association of Gas Safety Managers |
| AGTG | Association of Green Triangle Growers |
| AGTI | Association of Geography Teachers in Ireland |
| AGTI | Association of Geography Teachers of Ireland |
| AGTO | Association of Group Travel Organisers |
| AGWA | American Grant Writers Association |
| AGWA | Association of Ground Water Agencies |
| AGY | Association Gestalt et Yoga |