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 |
