* CDN: This is a widely recognized abbreviation for Canada, often used in financial contexts.
* CAN: This abbreviation is also used for Canada, particularly in international organizations and codes.
* CDA: This abbreviation is less common, but still used in some contexts.
It's important to note that none of these abbreviations are universally recognized or official. The best choice will depend on the specific context and audience. If you are concerned about confusion, it's always best to spell out "Canada" in full.