| Abbreviation | Definition |
|---|---|
| CLMC | Canadian Light Microscopy Course |
| CLMC | Compendium of Language Management in Canada |
| CLMS | Canadian Landbird Monitoring Strategy |
| CLPA | Crown Lands and Property Agency |
| CLRBR | Canadian Labour Relations Boards Reports |
| CLRC | Canadian Livestock Records Corporation |
| CLRI | Centres for Learning Research and Innovation in long-term care |
| CLRN | Canadian Lunar Research Network |
| CLRV | Canadian Light Rail Vehicle |
| CLS | Canada Land Surveyor |
| CLS | Canadian Lumber Standard |
| CLS | Canadians lumber systems |
| CLSA | Canadian Laboratory Suppliers Association |
| CLSA | Canadian Longitudinal Study on Aging |
| CLTS | Canadian Livestock Tracking System |
| CLTW | Canadian Light Truck Warehouse |
| CMA | Canadian Marketing Association |
| CMAAC | Chinese Medicine Acupuncture Association of Canada |
| CMAJ | Canadian Medical Association Journal |
| CMAT | Canadian Masters Alpine Team |