| Abbreviation | Definition |
|---|---|
| 12V | Most loved and beloved one |
| AAAH | Animated Atlas of African History |
| AAH | Association For Art History |
| AAHA | Applied Archaeology and History Associates |
| AAHC | African American History Challenge |
| AAHL | African American History Legacy |
| AAHM | African American History Month |
| AAHP | African American History Project |
| AAHS | American Aviation Historical Society |
| AAHS | Arizona Archaeological and Historical Society |
| AANHS | Archaelogical and Natural History Society |
| AANHS | Ayrshire Archaeological and Natural History Society |
| AAQ | Afro American Queen |
| ACA | Academy of Certified Archivists |
| ACIH | Australian Centre for Indigenous History |
| ACMH | Army Center of Military History |
| ACPH | Australian Centre for Public History |
| ACRH | Amsterdam Centre For Religious History |
| ADAH | Alabama Department of Archives and History |
| ADAH | Alabama Department of Archives and History Alabama Department of Archives and |