| Abbreviation | Definition |
|---|---|
| A&S | Activities & Services |
| AAWG | Aboriginal Affairs Working Group |
| AAWG | Advanced Agent Working Group |
| AAWG | Appraisal Alignment Working Group |
| AAWG | Approved Arrangements Working Group |
| ABWG | Alabama Bat Working Group |
| ACWG | Advisory Council Working Group |
| ACWG | Anti Corruption Working Group |
| APWG | Anti Phishing Working Group |
| ASMO | Artisanal and Small-scale Mining Organisations |
| ASTWG | Advanced Sampling Technology Work Group |
| ASTWG | Advanced Sampling Technology Working Group |
| ASTWG | Advanced Sensor Technology Working Group |
| ASTWG | Advanced Spaceport Technology Working Group |
| ASWG | Address Standard Working Group |
| ASWG | Administrative Systems Working Group |
| ASWG | Aerial Survey Working Group |
| ASWG | Archaeological Sites working group |
| ASWG | Arizona Solar Working Group |
| ASWG | AseXML Standards Working Group |