| ACOA | Australian Civil Offsets Agreement | 澳洲国内补偿协议 |
| ACOA | Alaska Campground Owners Association | 阿拉斯加露营地所有者协会 |
| ACOA | Association Canadienne des Orthophonistes et Audiologistes (Canadian Association of Speech-Language Pathologists and Aud | 加拿大直音师和听力学家协会（加拿大言语病理学家和Aud协会 |
| ACOA | Alaska Commission On Aging | 阿拉斯加老龄委员会 |
| ACOA | Atlantic Canada Opportunities Agency | 加拿大大西洋机遇署 |
| ACOA | Animal Charities Of America | 美国动物慈善机构 |
| ACOA | Alternative Course of Action | 备选行动方案 |
| ACOA | Anterior Communicating Artery | 前交通动脉 |
| ACOA | Alternate Course Of Action | 备选行动方案 |
| ACOA | Adaptive Course Of Action | 适应性行动方案 |
| ACOA | Activity Center for Older Adults | 老年人活动中心 |
| ACOA | American Committee on Africa | 美国非洲委员会 |
| ACOA | Adult Children Of Alcoholics | 成年酗酒儿童 |
| ACOA | American College of Oncology Administrators | 美国肿瘤管理学院 |