- American Converters
- American Council of Engineering Companies of Colorado
- American Council of Life Insurers
- American Council of the Blind
- American Council on Education
- American Data
- American Data and Computer Products, Inc.
- American Dental Association
- American Diabetes Association
- American Diabetes Association - Central South Texas Office
- American Dietetic Association
- American Electric Power
- American Exhibition Services
- American Express
- American Express
- American Express
- American Express
- American Express
- American Express Financial Advisors
- American Express Tax and Business Services of Illinois
- American Express Tax and Business Services of Maryland
- American Family Fitness
- American Family Insurance Group
- American Fats and Oils Association
- American Federation of Labor and Congress of Industrial Organizations AFL-CIO)
- American Federation of Teachers Program on Retirement and Retirees AFT)
- American Financial Services Association
- American Fire Sprinkler Association
- American Folding Door Company, Inc
- American Fork Hospital
- American Foundation for Donation and Transplantation
- American Gas Association
- American General Corporation-AIG
- American General Life Insurance
- American Geriatrics Society AGS)
- American Group Psychotherapy Association
- American Health Care Association
- American Health Information Management Association
- American Health Quality Association
- American HealthTech
- American Heart Association
- American Heart Association - Akron
- American Heart Association - Georgia
- American Heart Association - Youngstown
- American Hospital Association
- American Hospital Association
- American Humane Association
- American Immigration Lawyers Association
- American Inns of Court
- American Institute of Aeronautics and Astronautics