| California Architects Board | Academic & Science |
| Chicago Architecture Biennial | Academic & Science |
| Campus Activity Board | Academic & Science |
| Chemical Activity Barometer | Academic & Science |
| College Activities Board | Academic & Science |
| Centre for Astrobiology | Academic & Science |
| Campus Activities Board | Academic & Science |
| Central Activities Board | Academic & Science |
| Cabinda | Airport Code |
| Cairo Amman Bank | Banking |
| Customer Advisory Board | Business |
| Cabletelevision Advertising Bureaus | Business |
| Cabletelevision Advertising Bureau | Business |
| Certified Angus Beef | Business |
| Credit Access Business | Business |
| Control Arm Bushing | Business |
| Cabcharge Australia Ltd | Business |
| Consumers Association of Bangladesh | Business |
| Cameron Ashley Building Products, Inc. | Business |
| Crystal Aurora Borealis | Business |
| Clean Air Bonnet | Business |
| Claymore Advantaged Canadian Bond Exchange Traded Fund | Business |
| Cation-anion Balance | Chemistry |
| Canadian Association of Broadcasters | Community |
| Clarity, Accuracy, and Brevity | Community |
| Comic Arts Brooklyn | Community |
| Community Advisory Board | Community |
| Congress Avenue Building | Community |
| Citizen's Advisory Board | Community |
| Community Affairs Board | Community |
| Captain Ann Bonney, pirate | Community |
| Commonwealth Agricultural Bureau | Community |
| Conformity Assessment Body | Computer and Networking |
| Cabinet File | Computing |
| Compare A to B | Computing |
| Control Access Bus | Computing |
| Change Advisory Board | Computing |
| Computer Assisted Battle | Computing |
| Computer Aided Building | Computing |
| Computer Aided Balancing | Computing |
| Computer Address Bus | Computing |
| Computer Aided Blasting | Computing |
| Computer Assisted Book-Keeping | Computing |
| Computer Aided Business | Computing |
| Converged Address Book | Computing |
| cabinet file (archived collection of files used for offline installations) | Computing |
| Cabbage | Cryptocurrency |
| Competitive Analysis Benchmarking | Electronics |
| Compressed Cabinet File (microsoft) | File Type |
| Cold Adult Beverage | General |
| Cabernet Sauvignon | General |
| Clowns Acting Brutal | General |
| Crazy Attractive Baby | General |
| Computer-Aided Brainstorming | General |
| Controller Antilock Brake | General |
| Curtain Airbag | General |
| Control Arm Bushings | General |
| Cabriolet | General |
| Cement Asbestos Board | General |
| Canadian Angus Beef | General |
| Club Automobile du Burundi | General |
| Camara Automotor Boliviana | General |
| Club Automobile Berliet | General |
| Certified Auto Body | General |
| Canadian Auto Brokers | General |
| Combat Aeromedical Badge | General |
| Citizenship Amendment Bill | General |
| Conditionally Active Biologics | General |
| Citizenship Amaendment Bill | General |
| Cute Anime Boy | General |
| Cellulose Acetate Butyrate | General |
| Circulation Airway Breathing | General |
| Central Azucarera de Bais | General |
| Chile Argentina Brazil | General |
| Coach Art Briles | General |
| Conformity Assessment Board | General |
| Custom Algorithm Block | General |
| Consumer Affairs Branch | General |
| Customer Acquisition Bonus | General |
| Citizens' Advice Bureau | Governmental |
| Citizen Amendment Bill | Governmental |
| Computer Applications Branch | Governmental |
| Country Analysis Brief | Governmental |
| Criminal Assets Bureau | Governmental |
| College of Agricultural Banking | Indian Ministry of Finance |
| Cheap A** Bastard | Internet |
| cabergoline | Medical |
| Calcium Antagonists in Blacks (clinical trial) | Medical |
| Cambridge Apraxia Battery | Medical |
| carbonic anhydrase B | Medical |
| Carotid Artery Bruit | Medical |
| chlorambucil | Medical |
| chromogranin A and B | Medical |
| Chronic Asthmatic Bronchitis | Medical |
| Combined Androgen Blockade | Medical |
| Complete Androgen Blockade | Medical |
| Consumer Advisory Board | Medical |
| conventional amphotericin B | Medical |
| Coronary Artery Bypass | Medical |
| coronary artery bypass surgery | Medical |
| Combat Aviation Brigade | Military and Defence |
| Combined Arms Battalion | Military and Defence |
| Caribbean Africa and Brazil | Regional |
| Cabin | Space Science |
| Cabinet | Space Science |
| Civil Aeronautics Board | Space Science |
| Cost Audit Board | Space Science |
| Cricket Association of Bihar | Sports |
