- Agron Inc.
- Aid Association for Lutherans
- AIG American International Group, Inc.
- Aileen S. Andrew Foundation
- Air & Water Technologies
- Air Liquide USA LLC
- Air Products & Chemicals
- AK Steel Holding Corporation
- Akzo America
- Akzo Nobel
- Akzo Salt
- Alan Lithograph
- Alaska Air Group, Inc.
- Albany International
- Albemare
- Albemarle Corporation
- Albemarle Foundation
- Alberta Energy Company LTD
- Albertson's
- Alcan Aluminum