| Acronym | Definition |
|---|
| IACS➣International Annealed Copper Standard (est. 1914; International Electrotechnical Commission) |
| IACS➣International Association of Classification Societies |
| IACS➣Indian Association for the Cultivation of Science |
| IACS➣Integrated Administration and Control System |
| IACS➣Integrated Administration and Control System (EU system to administer payments under the common agricultural policy) |
| IACS➣Idaho Arts Charter School (Nampa, ID) |
| IACS➣Institute for Applied Computer Science (Germany) |
| IACS➣Institute for Advanced Computer Studies (University of Maryland) |
| IACS➣Instituto de Arte e Comunicação Social (Portuguese: Institute for Art and Media; Brazil) |
| IACS➣Illinois Association of Convenience Stores |
| IACS➣Industrial Automation and Control Systems |
| IACS➣International Academy of Cardiovascular Sciences (Minnetonka, MN) |
| IACS➣I Am Charlotte Simmons (Tom Wolfe book) |
| IACS➣Installation Access Control System |
| IACS➣International Association of Counseling Services, Inc. (Alexandria, VA) |
| IACS➣International Association of Chemical Societies |
| IACS➣Integrated Avionics Control System |
| IACS➣Integrated Armament Control System |
| IACS➣Integrated Acoustic Communications System |
| IACS➣International Annealed Copper Standard for conductivity |
| IACS➣Illinois Association of Christian Schools |
| IACS➣Insurance Accounting Collection System (US HUD) |
| IACS➣Information, Assurance & Certification Services (CESG, UK) |
| IACS➣Iranian-American Cultural Society of Maryland, Inc. |
| IACS➣Individuals Access to CMS (Centers for Medicare and Medicaid Services) Systems (US DHHS) |
| IACS➣Internet Access Control System (cloud based security service) |
| IACS➣Informatique Avancée Communication et Services (French) |
| IACS➣Intelligence Acoustic Communication System (US DoD) |