Amer - Apac
- Amerada Hess Corp.
- Amerasians
- America
- America First
- America First Committee
- America First Party
- America Firsters
- America for Americans
- America Illustrated
- America Online
- America the Beautiful
- America's Cup
- America's Dairyland
- America's Guard of Honor
- America's Most Beautiful City
- America's Paris
- America, U.S.S.
- American Academy of Arts and Letters
- American Academy of Arts and Sciences
- American Academy of Political and Social Science
- American Advertising Museum
- American Airlines
- American Anthropological Association
- American Anti-Imperialist League
- American Anti-Slavery Society
- American Arbitration Association
- American Art Museum
- American Assembly of Collegiate Schools of Business
- American Association for the Advancement of Science
- American Association for the Advancement of Slavic Studies
- American Association of Advertising Agencies
- American Association of Retired Persons
- American Association of University Professors
- American Association of University Women
- American Astronomical Society
- American Atheists
- American Automobile Association
- American Ballet Theatre
- American Bandstand
- American Bankers Association
