| Abbreviation | Definition |
|---|---|
| CROR | Canadian Rail Operating Rules |
| CRPA | Canadian Radiation Protection Association |
| CRPG | Canadian Retail Payments Group |
| CRPO | College of Registered Psychotherapists of Ontario |
| CRRF | Canadian Rural Revitalization Foundation |
| CRRS | Canadian Resource Recovery Strategy |
| CRSA | Canadian Retail Shippers' Association |
| CRSA | Canadian Review of Sociology and Anthropology |
| CRSB | Canada Recovery Sickness Benefit |
| CRSCA | Canadian Retail Supply Credit Association |
| CRSF | Canadian Rope Skipping Federation (Guelph, Ontario, Canada) |
| CRSN | Canadian Review of Studies in Nationalism |
| CRSNG | Conseil de recherches en sciences naturelles et en génie du Canada |
| CRSP | Canadian Registered Safety Professional |
| CRSP | Canadian Registered Safety Professionals |
| CRSS | Canadian Remote Sensing Society |
| CRT | Canadian Regulations and Treatment |
| CRTA | Canadian Research Tips and Advice |
| CRTO | College of Respiratory Therapists of Ontario |
| CRTWC | Certified Return to Work Coordinator (Canada) |