| Abbreviation | Definition |
|---|---|
| ACTA | Administrative Council for Terminal Attachments |
| ACTE | Alabama Council for Technology in Education |
| ACTFL | American Council of Teachers of Foreign Languages |
| ACTFL | American Council On Teaching Of Foreign Languages |
| ACTION | American Council To Improve Our Neighborhoods |
| ACTOR | American Council of Teachers Of Russian |
| ACTR | American Council of Teachers of Russian |
| ACTT | Accreditation Council of Trinidad and Tobago |
| ACTU | Australian Council of Trade Unions |
| ACUA | Advisory Council for Undergraduate Affairs |
| ACUA | Advisory Council on Underwater Archaeology |
| ACVA | American Council of Vedic Astrology |
| ACW | Arts Council of Wales |
| ACWB | Arts Council of Wood Buffalo |
| ACWB | Arts Council Wood Buffalo |
| ACWC | Arizona Civil War Council |
| ACWC | Arts Council for Wyoming County |
| ACWC | Arts Council of Williamson County |
| ACWE | Advisory Council of Western Engineering |
| ACWG | Advisory Council Working Group |