- ACS stands for (Automated Collection System) Call Site
- ACS stands for Affiliated Computer Services, Inc.
- ACS stands for Australian Computer Society
- ACS stands for American Constitution Society for Law and Policy
- ACS stands for Advanced Camera for Surveys (Hubble Space Telescope)
- ACS stands for American Community Survey (US Census Bureau)
- ACS stands for Army Community Service
- ACS stands for Access Control Server (Cisco Systems)
- ACS stands for Access Control Server (Cisco)
- ACS stands for Access
- ACS stands for American Chemical Society
- ACS stands for Acute Coronary Syndrome (medical condition)
- ACS stands for American Cancer Society
- ACS stands for American Constitution Society
- ACS stands for American Citizen Services (US Department of State)
- ACS stands for Administration for Children’s Services (New York City)
- ACS stands for American College of Surgeons
- ACS stands for Acute Coronary Syndromes (journal)
- ACS stands for Assistant Chief of Staff
- ACS stands for Association of Caribbean States
- ACS stands for Academic Computing Services
- ACS stands for Army Community Services
- ACS stands for Auto Club Speedway (various locations)
- ACS stands for American Camellia Society
- ACS stands for Allen County Scottsville High School (Kentucky)
- ACS stands for Alexander County Schools (North Carolina)
- ACS stands for Access Control System(s)
- ACS stands for Anglo-Chinese School
- ACS stands for Animal Care Services (various locations)
- ACS stands for Air Conditioning Service (various locations)
- ACS stands for Advances in Chemistry Series (American Chemical Society)
- ACS stands for Auto Club South