| Abbreviation | Definition |
|---|---|
| CHHMA | Canadian Hardware & Housewares Manufacturers' Association |
| CHIME | College of Healthcare Information Management Executives |
| CHIPS | Canadian Hearing Instrument Practitioners Society |
| CHLA | Canadian Health Libraries Association |
| CHNA | Canadian Holistic Nurses Association |
| CHOA | Canadian Heavy Oil Association |
| CHPA | Canadian Hardwood Plywood Association |
| CHPA | Combined Heat and Power Association |
| CHPA | Consumer Healthcare Products Association |
| CHSP | Coalition of Homeless Services Providers |
| CHW | Community Health Workers |
| CIA | Canadian Institute of Actuaries |
| CIA | Chemical Industries Association |
| CIAA | Canadian Independent Adjusters' Association |
| CIAB | Council of Insurance Agents & Brokers |
| CIAI | Chlear Implant Association Incorporation |
| CIArb | Chartered Institute of Arbitrators |
| CIBAA | Certified in Business Acquisition Advisory |
| CIC | Chemical Institute of Canada |
| CICO | Coalition of Illinois Counseling Organizations |