| Abbreviation | Definition |
|---|---|
| AAAAA | Anderson African American Alumni Association |
| AAAAA | Anonym Association Against Acronym Abuse |
| AAAAAA | American Association Against Acronym Abuse Anonymous |
| AAAAAA | Association for the Abolition of Abused Abbreviations and Asinine Acronyms |
| AAAASF | American Association for Accreditations of Ambulatory Surgery Facilities |
| AAAASFI | American Association for Accreditation for Ambulatory Surgery Facilities International |
| AAAASFI | Army Aviation Association of America Scholarship Foundation Inc |
| AAAB | Asociación de Ateos y Agnósticos de Bogotá (Spanish: Association of Atheists and Agnostics of Bogotá |
| AAABA | All American Amateur Baseball Association |
| AAABA | Arizona Asian American Bar Association |
| AAABA | Austin Asian American Bar Association |
| AAAC | Association for the Advancement of |
| AAAC | Association For The Advancement Of Affective |
| AAAC | Association for the Advancement of Criminology |
| AAAC | Association of African American Collegians |
| AAACE | American Association for |
| AAACE | American Association for Adult Continuing Education |
| AAACE | American Association of Adult and Continuing Education |
| AAACE | American Association of Agricultural College Editors |
| AAACS | American Association for the Advancement of Curriculum Studies |