| Architectural Control Systems Inc | Academic & Science |
| Automated Collection Services Inc | Business |
| Advanced Containment Systems Inc | Business |
| Architectural Control Systems Incorporated | Business |
| Accell Corporate Sustainability Initiative | Business |
| American Combustion Service Inc | Business |
| Automated Conveyor Systems Inc | Business |
| Associate of Chartered Securities and Investment | Business |
| Advanced Cyclotron Systems Inc | Business |
| Advisory Committee on Sustainability and Innovation | Business |
| Approved Cylon Systems Integrator | Business |
| Affiliated Corporate Services, Inc. | Business |
| Argent Consulting Services, Inc. | Business |
| Association of Christian Schools | Community |
| Association of Christian Schools International's | Community |
| Association of Christian School International | Community |
| Anglo-Chinese School Independent | Community |
| Association of Christian Schools International | Community |
| Audax Club Sportivo Italiano | Community |
| Association of Clinical Scientists in Immunology | Community |
| Atari Computer System Interface | Computing |
| Advanced Computer System Interface | Computing |
| ACryptoSI | Cryptocurrency |
| American Customer Satisfaction | General |
| Abstract Communication Service Interface | General |
| American Consumer Satisfaction Index | General |
| Accelerating Change for Social Inclusion | General |
| Assistant Chief of Staff Intelligence | General |
| Air Cleaning System Inline | General |
| American Customer Satisfaction Index | General |
| Automotive Composite Systems International | General |
| Automotive Cooling System Institute | General |
| Assistant Chief of Staff for Intelligence | Governmental |
| Americas Counter Smuggling Initiative | Governmental |
| Asian Culinary School Incredible | International |
| Australian Council of Superannuation Investors | Regional |
