- American Institute of Architects - DC
- American Institute of Architects - TX
- American Institute of Architects Kansas Chapter
- American Institute of Medical and Dental Technology
- American Institutes for Research
- American Insurance Marketing Services, Inc.
- American International Companies
- American International Group AIG)
- American Kidney Fund
- American Legal
- American Legion - Department of Illinois
- American Lighting Association
- American Liver Foundation
- American Liver Foundation - Greater New York Division
- American Liver Foundation, Desert Southwest Division
- American Liver Foundation, Great Lakes Division
- American Lung Association in Wisconsin
- American Massage Therapy Association
- American Medical Association
- American Medical Equipment Company
- American Medical Rehabilitation P. Association
- American Medical Response
- American Medical Response/Medic West
- American Medical Student Association
- American Medical Women's Association
- American Medical Writers Association
- American Mensa Ltd.
- American Moving and Storage Association
- American National Bank
- American National Standards Institute
- American Nursery Landscape Association
- American Nurses Association
- American Nurses Credentialing Center
- American Optometric Association
- American Ordinance
- American Osteopathic Association
- American Outcomes Management, LP
- American Peanut Council
- American Petroleum Institute
- American Pharmaceutical Association
- American Pharmaceutical Review
- American Physical Therapy Association
- American Plastic Council
- American Press Service and Feature Syndicate
- American Product Distributors Inc.
- American Program Underwriters
- American Project Access Network
- American Public Human Services Association
- American Railway Engineering and Maintenance-of-Way Association
- American Red Cross