| Abbreviation | Definition |
|---|---|
| ACRF | Alaska Center for Resource Families |
| ACRG | Association for Community-Responsive Government |
| ACRI | Aids Community Research Initiative |
| ACRI | American Civil Rights Institute |
| ACRIA | AIDS Community Research Initiative of America |
| ACRID | Alberta Chapter of the Registry of Interpreters for the Deaf |
| ACRL | Association of College and Research Libraries |
| ACRM | Atlantic City Rescue Mission |
| ACRN | Asthma Clinical Research Network |
| ACRO | Association of Clinical Research Organizations |
| ACRP | Association of Clinical Research Professionals |
| ACRR | American Council on Race Relations |
| ACRR | Asociacion de Criadores de la Raza Rottweiler |
| ACRREF | American College of Rheumatology Research and Education Foundation |
| ACRRU | American Civil Rights and Responsibilities Union |
| ACRS | Applied Computational Research Society |
| ACRS | Association Canadienne des Revues Savantes |
| ACRS | Australian Coral Reef Society |
| ACRT | Association for Clinical Research Training |
| ACRU | American Civil Rights Union |