| Abbreviation | Definition |
|---|---|
| AACOC | Avicultural Advancement Council of Canada |
| AADNC | Affaires Autochtones et D??veloppement du Nord Canada (English: Aboriginal Affairs and Northern Development Canada) |
| AADNC | Affaires Autochtones et Développement du Nord Canada (English: Aboriginal Affairs and Northern Development Canada) |
| AADNC | Affaires autochtones et du Nord Canada |
| AAFC | Agriculture Agri-Food Canada |
| AAFC | Agriculture & Agri-Food Canada |
| AAFC | Agriculture and Agri Food Canada |
| AAFC | Agriculture and Agri-Food Canada |
| AANDC | Aboriginal Affairs and Northern Development Canada |
| AANDC | Aboriginal Affairs Northern Development Canada |
| AANDC-AADNC | Aboriginal Affairs and Northern Development Canada - Affaires autochtones et D??veloppement du Nord Canada |
| AANDC-AADNC | Aboriginal Affairs and Northern Development Canada - Affaires autochtones et Développement du Nord Canada |
| AB | Alberta |
| ABC | Alberta Building Code |
| ABC | Anything But Conservative |
| ABCFP | Association of BC Forest Professionals |
| ABEC | Association of Bulgarian Engineers in Canada |
| ACA | Association of Canadian Advertisers |
| ACAM | Atlantic Canada Aviation Museum |
| ACBF | Afghanistan Canada Business Federation |