| College of Architecture Design and Construction | Academic & Science |
| Canadian Astronomy Data Centre | Academic & Science |
| Child Anxiety Disorders Clinic | Academic & Science |
| Coastal Acadia Development Corporation | Business |
| Crash Analysis Data Collector | Business |
| Certified Alcohol Drug Counselor | Business |
| Certified Alcohol and Drug Counselor | Business |
| Certification for Alcohol and Drug Counselors | Business |
| Crown Assets Distribution Centre | Business |
| Classy And Dabby Club | Community |
| Center for Aging in Diverse Communities | Community |
| Community Action Development Corporation | Community |
| Charlottetown Area Development Corporation | Community |
| Cleveland Area Development Corporation | Community |
| Chambersburg Area Development Corp | Community |
| Christian Anti-Defamation Commission | Community |
| Chinese Association Dance Crew | Community |
| Connecticut Art Directors Club | Community |
| Computer Aided Design Control | Computing |
| Computer Aided Design Centre | Computing |
| Computer Assisted Data Collection | Computing |
| CAD Coin | Cryptocurrency |
| Central Air Data Computer | General |
| California Avian Data Center | General |
| Common Artemis Driving Cycle | General |
| Chipcon Approved Design Center | General |
| Common Artemis Driving Cycles | General |
| Center for Advanced Digestive Care | General |
| Cambridge Adventure Day Camp | General |
| Corporacion Alcoholes Del Caribe | General |
| Chakma Autonomous District Council | Governmental |
| California Appellate Defense Counsel | Governmental |
| Court of Appeals D C Circuit | Governmental |
| Court of Appeals for the District of Columbia | Governmental |
| Court of Appeals for the D C Circuit | Governmental |
| Central Arkansas Development Council | Governmental |
| CONUS (CONtinental United States) Award Data Coordination | Governmental |
| Court of Appeals, District of Columbia Circuit | Governmental |
