| Abbreviation | Definition |
|---|---|
| ACVB | Austin Convention and Visitors Bureau |
| ACVB | Avalon Convention Visitors Bureau |
| ACVC | Abbeville County Visitors Council |
| ACVC | Alberta California Venture Channel |
| ACWA | Association of California Water Agencies |
| ADAA | Alcohol and Drug Abuse Administration |
| ADAD | Alcohol and Drug Abuse Division |
| ADAP | AIDS Drug Assistance Program |
| ADAPAIDS | Drug Assistance Program |
| ADC | Animal Damage Control |
| ADE | Assistant Divisional Engineer |
| ADEC | Alaska Department of Environmental Conservation |
| ADEM | Alabama Department of Environmental Management |
| ADF&G | Alaska Department of Fish and Game |
| ADFA | Arkansas Development Finance Authority |
| ADFG | Alaska Department of Fish and Game |
| ADFT | Arizona Defensive Firearms Training |
| ADH | Arkansas Department of Health |
| ADHS | Arizona Department of Human Services |
| ADHSS | Alaska Department of Health and Social Services |