| Abbreviation | Definition |
|---|---|
| CLRP | Certified Labor Relations Professional |
| CLS | Canada Land Surveyor |
| CLS | Certified Lotus Specialist |
| CLS | Clinical Laboratory Scientist |
| CLT | Certified Landscape Technician |
| CM | Camera Man |
| CM | Case Manager |
| CM | Cast Member |
| CM | Certified Manager |
| CM | Chief Minister |
| CM | Chill Master |
| CM | Communications Manager |
| CM | Construction Manager |
| CM | Contact Manager |
| CM | Country Manager |
| CMA | Certified Marketing Analyst |
| CMA | Certified Medical Assistant |
| CMA | Certified Medication Aide |
| CMA | Contract Management Assistant |
| CMAA | Chief Master At Arms |