| Automatic Battery Charger Circuit | Academic & Science |
| Administrative and Bioinformatics Coordinating Center | Academic & Science |
| Advanced Biomedical Computing Center | Academic & Science |
| Arlington Business and Civic Circle | Business |
| Advisory Board on Compensation Claims | Business |
| A B C Dispensing Technologies Company | Business |
| Academic Biomedical Career Customization | Business |
| American Board of Clinical Chemistry | Chemistry |
| Angami Baptist Church Council | Community |
| Arunachal Baptist Church Council | Community |
| Association for Black Cultural Centers | Community |
| Association of British Chambers of Commerce | Community |
| Australian British Chamber of Commerce | Community |
| Association for Black Culture Centers | Community |
| Ancient Bald Cypress Consortium | General |
| ATP Binding Cassette C | General |
| Acacia Blocc Compton Crips | General |
| Advanced Basal Cell Carcinoma | General |
| American Body Composition Calculator | General |
| Appearance Behaviour Communication and Confidence | General |
| Ask Believe Cooperate and Compliment | General |
| All British Car Club | General |
| American Bantam Car Company | General |
| Apple, Blueberry, Cherry, and Cranberry | General |
| American Board of Comprehensive Care | General |
| Amicale Van Belgische Citroen Clubs | General |
| Australian Borgward Car Club | General |
| Acton Boxborough Cultural Council | Governmental |
| Alcoholic Beverage Control Commission | Governmental |
| Alcoholic Beverages Control Commission | Governmental |
| Atomic Bomb Casualty Commission | Governmental |
| Alcohol Beverages Control Commission | Governmental |
| Ashland Bellefonte Cancer Center | Medical |
| All Breeds Cat Club | Medical |
| Airborne Communications Center | Military and Defence |
| Australian Building and Construction Commission | Regional |
| Australian Building and Construction Commissioner | Regional |
| Australia Brazil Chamber of Commerce | Regional |
