| Abbreviation | Definition |
|---|---|
| AACD | Alaska Association of Conservation Districts |
| AACS | Asbestos Abatement Contractors/Supervisors training class |
| AAEF | Asian Automotive Environmental Forum |
| AAEM | American Academy of Environmental Medicine |
| AAEP | Alaska Association of Environmental Professionals |
| AAIS | Aquatic Alien Invasive Species |
| AALC | Australian Alps Liaison Committee |
| AAMM | Ambient Air Monitoring Method |
| AAMMP | Airborne Asbestos Management and Monitoring Plan |
| AAMP | Arkansas Amphibian Monitoring Program |
| AAQ | Advanced Air Quality |
| AAQA | Ambient Air Quality Analysis |
| AAQS | Ambient Air Quality Services |
| AAQS | Ambient Air Quality Standards |
| AASF | Adopt-A-Salmon Family |
| ABBP | Annual Biomass Burning Potential |
| ABCA | Ausable Bayfield Conservation Authority [Ontario, Canada] |
| ABGR | Australian Building Greenhouse Rating |
| ABRG | Asamer Becker Recycling GmbH |
| ABRI | Apartment Building Recycling Initiative |