| Abbreviation | Definition |
|---|---|
| CHS | Canadian Hearing Society |
| CHSC | Canadian Home Shopping Channel |
| CHS-SCO | Canadian Hearing Society-la Société Canadienne de l’Ouïe |
| CHS-SCO | Canadian Hearing Society-la Société Canadienne de lOuïe |
| CHST | Canada Health and Social Transfer |
| CHST | Canadian Health and Social Transfer |
| CHTA | Canadian Hemp Trade Alliance |
| CHTA | Canadian Horticultural Therapy Association |
| CHTA | Canadian Humanistic and Transpersonal Association |
| CHTD | Canadian HIV Technology Development |
| CHTR | Canadian Heartland Training Railway |
| CHW | Canada Hadassah WIZO |
| CI | Canadian Institute, the |
| CIAH | Canadian International Academy of Hockey |
| CIAJ | Canadian Institute for the Administration of Justice |
| CIAR | Canadian Institute For Advanced Research |
| CIAS | Canadian Immigration Assistance Services |
| CIAS | Canadian International Air Show |
| CIAS | Canadian International Auto Show |
| CIAU | Canadian Interuniversity Athletics Union |