| Acronym | Definition |
|---|
| ACAO➣Access-Control-Allow-Origin (computing) |
| ACAO➣Assistant Chief Administrative Officer (various locations) |
| ACAO➣Aero Club Adele Orsi (Italian air gliding club; Varese, Italy) |
| ACAO➣Apprentissage Collaboratif Assisté par Ordinateur (French: Computer Assisted Collaborative Learning) |
| ACAO➣Assistant Cultural Affairs Officer (US State Department, Public Affairs) |
| ACAO➣Armenian Cultural Association of Ottawa (Ottawa, ON, Canada) |
| ACAO➣Acyl Coenzyme A Oxidase |
| ACAO➣Anterior-Cerebral Artery Occlusion |