- Ambac Financial Group, Inc.
- AMBAC Inc.
- Amcast Industrial
- AMD Advanced Micro Devices
- American Academy of Dermatology
- American Airlines
- American Airlines Political Action Committee
- American Appraisal Associates
- American Brands
- American Century Investments
- American Cyanamid
- American Eagle Outfitters
- American Electric Power
- American Electric Power System
- American Express
- American Express Company
- American Express Financial Advisors, Inc.
- American Express Foundation
- American Express Minnesota
- American Fidelity Assurance Corporation