A. Peter Kiewit Infrastructure Co.
A. Raymond Tinnerman Manufacturing Hamilton Inc.
A. Schulman
A.V. Gauge & Fixture Inc.
AAR-Kel Moulds
ABB Inc.
ABC Group Exterior Systems
Absolute Results Productions Ltd.
Accenture Inc
Accurcast Inc.
Ace Bakery
ACS -- A Xerox Company
Action Car and Truck Accessories
Activplant Corporation
Acument Global Technologies
Adesa Auction Canada Corporation
Adient
ADP Canada
Advanced Design Solutions Inc.
Advantage Wireless
AEARO Canada Ltd
Aecon Utilities
Aegion Corporation
AFCC, Automotive Fuel Cell Cooperative
Affinia Canada Corp
Agero
Agrium, Inc. (Crop Production Services Canada Inc.)
AGS Automotive Systems
Air Liquide Canada Inc.
Aisin Canada Inc.
Alberici Constructors Ltd
Alcoa Investment Cast & Forged Products
Alcoa-Aluminerie de Deschambault
Aleris Specification Alloy Products
Algoma Steel
Aliments Asta Inc.
Aliments Breton
Allegis Group Canada Corporation
Alliance Inspection Management Canada (AiM Canada)
Allied Holdings Inc.
AltaLink Management Ltd.
Aluminerie Alouette Inc.
Amcan Castings
Amex Canada Inc. (American Express)
Amtelcom-Bragg Group
Android-Brampton LLC
ANSYS Inc.
AON Canada (Hewitt Associates LLC)
Aramark Canada Ltd.
Arbor Memorial Services Inc.
ArcelorMittal
ArcelorMittal Dofasco Inc
ArcelorMittal Tailored Blanks
ARI Financial Services Inc.
Arkit Transport Broker Inc.
Arlanxeo (segment of Lanxess)
Arvin Meritor Ride Control Product
Asplundh Canada
Associated Spring Operations
Astadia
Astra Design Systems Inc.
AstraZeneca Canada Inc.
Atco Ltd
Atlantic Container Line AB
Atlantic Packaging Products Ltd.
Atlas Copco Canada Inc.
Atlas Tag Company Of Canada Inc.
Autodata Solutions Company
Autodesk Canada Company
AutoGross Marketing Consultants, LLC
Autoliv Canada Inc.
Automotive Performance Group Ltd/CDP
Autotube
AutoVIN Inc.
Avaya Canada
Avery Dennison Canada
Axiom Group Inc.