| American Association of Chemistry Teachers | Academic & Science |
| American Association of Candy Technologists | Business |
| ABT Associates Clinical Trials | Business |
| American Academy of Clinical Toxicology | Business |
| American Association of Community Theatre | Community |
| American Association of Chinese in Toxicology | Community |
| Artists Against Corporate Taxation | Community |
| Auburn Area Community Theatre | Community |
| Apartment Association of Central Texas | Community |
| American Association of Chinese Toxicologists | Community |
| American Association of Christian Therapists | Community |
| Advanced Application Certification Testing | Computing |
| Academy of Arts Careers and Technology | Computing |
| Access Ability Communications Technology | Computing |
| Actively Aerated Compost Tea | General |
| ARM ASR Coordination Team | General |
| Aeronautics Astronautics CubeSat Team | General |
| Awareness Against Current Transgressions | General |
| Aisin Automotive Casting Tennessee | General |
| Adult Anxiety Clinic of Temple | General |
| Automaticity Affect Control and Thought | General |
| Actively Aerated Castings Tea | General |
| Automated All-weather Cargo Transfer | Governmental |
| Advocacy Alliance Center of Texas | Governmental |
| Alliance for the Advancement of Cellular Therapies | Governmental |
| Active After Cancer Trial | Medical |
| Addiction Alcohol Clinical Trials | Medical |
| Autism Awareness Care and Training | Medical |
| Adults and Children Talking | Messaging |
| Air-to-air Combat Test | Military and Defence |
