Lista de empresas
| Name | Province | City | |
|---|---|---|---|
| Atlas Vancouver - Atlas Roofing Corporation | Columbia Británica | Delta | |
| Atomic Plating - Atomic Plating Ltd. | Columbia Británica | Mission | |
| ATOTECH CANADA - Atotech Canada Ltd. | Ontario | Burlington | |
| ATrahan Transformation Inc. - ATrahan Transformation Inc. | Quebec | Yamachiche | |
| Attachie Compressor Station 04-20 - ARC RESOURCES LTD. | Columbia Británica | Hudson's Hope | |
| Aurora North Mine Site - Suncor Energy (Syncrude) Operating Inc | Alberta | Fort McMurray | |
| AUTOCOM MANUFACTURING - Autocom Manufacturing | Ontario | Guelph | |
| Autoliv Tilbury Facility - Autoliv Canada Inc. | Ontario | Tilbury | |
| Automation Components Division - Centerline (Windsor) Ltd. | Ontario | Windsor | |
| Autosystems - Plant 1 - Magna Exteriors Inc. | Ontario | Belleville |
