| Abbreviation | Definition |
|---|---|
| AACCC | Alamo Area Clean Cities Coalition |
| ABOC | Alabama Board of Cosmetology |
| ABQ | Albuquerque |
| ACC | American Center for Cities |
| ACSC | Atmos Cities Steering Committee |
| ACTC | Associated Colleges of the Twin Cities |
| ACVN | Association of Cities in Viet Nam |
| ACY | Akron, Canton, and Youngstown |
| ADA | Adana Armenia |
| AF | Atlanta-Fulton |
| AFC | Art Fair City |
| AFHC | Alliance For Healthy Cities |
| ALY. | alley (Postal Service Standard Suffix Abbreviation) |
| APCS | Asia Pacific Cities Summit |
| ASQC | Autism Society of the Quad Cities |
| AUC | Association of Ukrainian Cities |
| BC | Bay City |
| BC | Bayou City |
| BCCC | Beach Cities Cycling Club |
| BCHC | Big Cities Health Coalition |
