| ACWG | Abstract Complex Workflow Generator 
| Others |
| ACWG | Accident Classification Work Group
| Others |
| ACWG | Administrative Cooperation Working Group
| Others |
| ACWG | Advisory Council Working Group
| Others |
| ACWG | Agrarian Change Working Group
| Others |
| ACWG | Allen's Creek Watershed Group, Ann Arbor, Michigan
| Others |
| ACWG | American Carpet Wholesale Group
| Others |
| ACWG | American Carpet Wholesalers of Georgia, Inc.
| Others |
| ACWG | American Civil War: Gettysburg (computer game)
| Others |
| ACWG | Anti Corruption Working Group
| Others |
| ACWG | Anti-Capitalist Working Group
| Others |
| ACWG | Asian Carp Work Group
| Others |
| ACWG | Austin Christian Writers' Guild
| Others |
| ACWG | Australian Centre for Wildlife Genomics
| Others |