AACR
| Acronym | Definition |
|---|---|
| AACR | American Association for Cancer Research |
| AACR | Anglo-American Cataloging Rules |
| AACR | Australasian Association of Cancer Registries |
| AACR | Association for the Advancement of Civil Rights (political party; Gibraltar) |
| AACR | American Association of Clinical Research |
| AACR | Amicale Anglo Cabrio Rennais (French automotive racing group) |
| AACR | African Armed Conflicts Resolved |