| Abbreviation | Definition |
|---|---|
| CDA | Association canadienne des barrages |
| CDA | Association Dentaire Canadienne |
| CDA | Canadian Dam Association |
| CDAS | Canberra Districts Aquarium Society |
| CDCS | Center on Digital Culture and Society |
| CDGS | Capital District Genealogical Society |
| CDS | Cognitive Development Society |
| CDSS | Country Dance and Song Society |
| CDTS | Continental Divide Trail Society |
| CEA | Association Canadienne d'conomique |
| CEA | Association Canadienne d'ducation |
| CEA | Association Canadienne de l'Électricité |
| CEA | Association Canadienne de l'lectricit |
| CEA | Association Canadienne d'Économique |
| CEA | Association Canadienne d'Éducation |
| CEA | Canadian Economics Association |
| CEA | Canadian Education Association |
| CEA | Canadian Electricity Association |
| CEAS | Council of European Aerospace Societies |
| CEASA | Cost Engineering Association of South Africa |