| Abbreviation | Definition |
|---|---|
| CDA | Copper Development Association |
| CDA | Cyber Dog Association |
| CDAA | Career Development Association of Australia |
| CDE | Cornish Danish Exchange |
| CDFL | Child Development and Family Living |
| CDIA | Canadian Defence Industries Association |
| CDIA | Canadian Defence Industry Association |
| CDIA | Consumer Data Industry Association |
| CDLA | California Defamation Lawyers Association |
| CDPA | Capital District Planners Association |
| CDS | Corporate Directory Source |
| CDSA | Canadian Disability Studies Association |
| CDSA | Child Development Student Association |
| CDSA | Children's Disability Service Association |
| CE | IEEE Consumer Electronics Society |
| CEA | Canadian Equestrian Association |
| CEA | Christ Ellegiance Association |
| CEA | Christian Education Association |
| CEA | Consumer Electronics Association |
| CEAC | Clinical and Excellence Awards Committee |