| Abbreviation | Definition |
|---|---|
| AAAC | Afro American Action Committee |
| AAC | Attendance Area Committee |
| AACCI | Ashtabula Area College Committee Inc |
| AACI | Anglo-American Committee of Inquiry |
| AAFEC | Affirmative Action in Faculty Employment Committee |
| AAIC | Aircraft Accident Investigation Committee |
| AAOC | Athletic Academic Oversight Committee |
| AAOC | Athletic and Academic Oversight Committee |
| AASC | Astronomy and Astrophysics Survey Committee |
| AAWCCS | Army Atomic Weapons Systems Safety Committee |
| ABAC | Akhil Bharatiya Aman Committee |
| ABAC | Audit and Budget Advisory Committee |
| ABDC | Analytics Big Data Committee |
| ABEC | Annular Bearing Engineers Committee |
| ABOC | Audit and Budget Oversight Committee |
| ABRC | Arkansas Bird Records Committee |
| ACAN | Advisory Committee on Antarctic Names |
| ACAPS | Assessment Committee Application Processing System |
| ACAUT | Action Committee Against Unabated Taxation |
| ACAV | Action Committee against Violence |