| Abbreviation | Definition |
|---|---|
| CIDC | Canadian International Demining Corps |
| CIDCO | Centre interdisciplinaire de développement en cartographie des océans |
| CIDD | Canadian Integrated Dance Database |
| CIDS | Canadian Infectious Disease Society |
| CIDT | Canada Ice Dance Theatre |
| CIEAN | Canadian Institute of Education and Applied Neuroscience |
| CIEC | Canada India Education Council |
| CIEC | Canadian Interprovincial Equestrian Championships |
| CIEE | Canadian Institute of Ecology and Evolution |
| CIES | Canada Immigration and Education Services |
| CIESC | Comparative and International Education Society of Canada |
| CIET | Canadian |
| CIET | Canadian Institute for Energy Training |
| CIFAR | Canadian Institute For Advanced Research |
| CIFC | Canadian Independent Film Caucus |
| CIFC | Canadian Investment Funds Course |
| CIFF | Canadian Insurance Financial Forum |
| CIFSRF | Canadian International Food Security |
| CIFSRF | Canadian International Food Security Research Fund |
| CIG | Canadian Immunization Guide |