| Abbreviation | Definition |
|---|---|
| CIM | Canadian Institute of Management |
| CIPH | Canadian Institute of Plumbing and Heating |
| CISC | Canadian Institute of Steel Construction |
| CISC | Construction Industry Safety Coalition |
| CITA | Canadian Imaging Trade Association |
| CIVC | Le Comit?? Interprofessionnel du vin de Champagne |
| CIVC | Le Comité Interprofessionnel du vin de Champagne |
| CKCA | Canadian Kitchen Cabinet Association |
| CLIS | Centre for Learner Identity Studies |
| CLOC | Corporate Legal Operations Consortium |
| CMA | Canadian Marketing Association |
| CMDC | Canadian Media Directors' Council |
| CMSA | Canadian Mill Services Association |
| COCD | Center for Organization and Community Development |
| COFI | Council Of Forest Industries |
| COHA | Canadian Oil Heat Association |
| COTA | Canada Organic Trade Association |
| CPC | Canadian Pork Council |
| CPCI | Canadian Precast/Prestressed Concrete Institute |
| CPRB | Clinical Physiologists Registration Board |