| Abbreviation | Definition |
|---|---|
| AUPO | Association of University Purchasing Officers |
| AURA | Association of Universities for Research in Astronomy |
| AUSA | All University Student Association |
| AUSA | Association of United States Army |
| AUSN | Association of the United States Navy |
| AUTM | Association of University Technology Managers |
| AUU | Association of Urban Universities |
| AUW | Association of Universalist Women |
| AVA | American Vaping Association |
| AVA | American Vaulting Association |
| AVA | American Volkssport Association |
| AVA | Antarctic Vexillological Association |
| AVA | Association for Vascular Access |
| AVA | Association for Visual Arts |
| AVAP | Association of Veterinary Advancement Professionals |
| AVARI | Association for Voluntary Action Research in Ireland |
| AVCC | Association of Vermont Conservation Commissions |
| AVCE | Association Valaisanne du Contrôle en Electricité |
| AVCIS | Association of Chief Police Officers Vehicle Crime Intelligence Service |
| AVCU | Association of Vermont Credit Unions |