| Abbreviation | Definition |
|---|---|
| ACFC | Australasian Cystic Fibrosis Conference |
| ACFE | Australian Christian Forum on Education |
| ACFS | American Custom Figure Symposium |
| ACFS | Asian Conference for Frailty and Sarcopenia |
| ACGC | Advent Christian General Conference |
| ACGIH | American Conference Of Governmental Industrial Hygienists |
| ACGM | Annual Clinical Genetics Meeting |
| ACGM | Annual Conference and General Meeting |
| ACGM | Annual Convention And General Meeting |
| ACHA | Asian Conference on Hepatitis and AIDS |
| ACHV | American Conference on Human Vibration |
| ACI | American Conference Institute |
| ACI | Automatic Channel Installation |
| ACIC | American Causal Inference Conference |
| ACIC | Atlantic Causal Inference Conference |
| ACIS | American Conference for Irish Studies |
| ACIS | Australasian Conferences on Information Systems |
| ACIT | Arab Conference on Information Technology |
| ACLAB | Asian Conference on Lactic Acid Bacteria |
| ACLC | American Clergy Leadership Conference |