| Austrian Center for Parallel Computation | Academic & Science |
| Academic Computing Policy Committee | Academic & Science |
| Association Canadienne des Professeurs de Comptabilit | Academic & Science |
| Alberta Collegiate Programming Contest | Academic & Science |
| Arab Center for Pharmaceutical and Chemical | Academic & Science |
| Aerosols Clouds Precipitation and Climate | Academic & Science |
| Aerospace Collaboration and Partnership Center | Academic & Science |
| Academic and Career Planning Center | Business |
| 1- Aminocyclopropanecarboxylic Acid | Chemistry |
| Ames Community Preschool Center | Community |
| Allsboro Cumberland Presbyterian Church | Community |
| American Committee for Peace in Chechnya | Community |
| Area Child Protection Committee | Community |
| Arts Coalition Planning Committee | Community |
| Arts Council of Placer County | Community |
| American Council for Polish Culture | Community |
| Asian Council For Peoples Culture | Community |
| Annual Conference Program Committee | Community |
| Auckland Chinese Presbyterian Church | Community |
| Admission Committee for Professional Courses | Community |
| Association of Coffee Producing Countries | Community |
| Aliso Creek Presbyterian Church | Community |
| American Committee for Peace in the Caucasus | Community |
| ACPC Committee for Professional Courses | Community |
| Admission Committee for Professinal Courses | Community |
| Arab Collegiate Programming Contest | Computing |
| Alberta Canola Producers Commission | General |
| Aged Care Pricing Commissioner | General |
| Apple Communications Protocol Card | General |
| Annual Computer Poker Competition | General |
| Agricultural Credit Policy Council | General |
| Antwerp Car Processing Center | General |
| Air Carriers Purchasing Conference | Governmental |
| Association of Corporate Patent Counsel | Governmental |
| Arizona Community Pharmacy Committee | Governmental |
| Annual Club Planning Conference | Governmental |
| Automotive Career Placement Counselor | Jobs |
| Adult Congenital and Pediatric Cardiology | Medical |
| A Caring Pregnancy Center | Medical |
| African Climate Policy Centre | Regional |
| Australian Crime Prevention Council | Regional |
| Association of Compounding Pharmacists of Canada | Regional |