- ACS
ACS may refer to:
;Aviation and military
*Air Cess , cargo airline based in Sharjah, United Arab Emirates
*Auxiliary Crane Ship , a vessel of the United States Navy
*Aerial Common Sensor , a reconnaissance aircraft airframe for the United States Army and Navy
*Army Combat Shirt , flame-resistant shirt developed for the United States Army
*Attitude control system , a system of spacecrafts;Companies
* Actividades de Construcción y Servicios, S.A. (IBEX-35 stock symbol: ACS) Madrid, Spain
*Advanced Composites Solutions , engineering company specialized in composite materials technology
*Affiliated Computer Services (stock symbol: ACS), a business and technology outsourcing company
*Affiliated Construction Services provides integrated design, construction and operations solutions for complex facilities, systems and equipment
*Alaska Communications System , former name of AT&T Alascom, an American communications services company
*Alaska Communications Systems , an American communications services company, distinct from "AT&T Alascom";Education
* The Alternative Community School, now known as the Lehman Alternative Community School, a combined middle and high school which provides alternative education in Ithaca, New York, United States.
*American College of Sofia , a prestigious secondary school in Sofia, Bulgaria
*American Community School at Beirut , an international private school located in Beirut, Lebanon
*American Community School in Amman , an international school in Amman, Jordan
*ACS International Schools , a group of international schools in England
* Anglo-Chinese Schools, Singapore, a group of Methodist schools in Singapore
*Anglo-Chinese Schools, Malaysia , a group of Methodist schools in Malaysia
*Associated Colleges of the South , a group of leading liberal arts colleges in the United States
*Assumption College School , a catholic high school in Ontario, United States
*American Community Schools , an English-speaking private school system in Athens, Greece
*Avery Coonley School , a private elementary school in Illinois, United States;Science, technology, and medicine
*Advanced Cataract Surgery , the modern method of cataract removal using phacoemulsification.
*Action Code Script , a scripting language used in video games such as HeXen and modern Doom ports
*Advanced Camera for Surveys , an instrument aboard the Hubble Space Telescope
*Acute coronary syndrome , a form of chest pain due to reduced oxygen supply to the heart muscle
*ACS-1 and ACS-360, supercomputers designed but never completed in the 1960s by the IBM "Advanced Computing Systems"
*Anticenter shell , a supershell located outside of the galaxy.
*Auto-Configuration Server , encompasses auto configuration for Customer-Premises equipment
*Automated Cartridge System , a storage and retrieval system, often used for library management
*Advanced Console Servers , a terminal server range from the Alabama based company, Avocent
*ALMA Common Software , a control framework for the Atacama Large Millimeter Array project
*Acetyl-CoA Synthetase
*Adaptive communication system , a message-passing protocol that can adapt to changes in load and traffic;National societies
*American Cancer Society , an American medical organization
*American Chemical Society , an American professional association
*American Colonization Society , an organization that helped in founding Liberia, for use in the slave trade
*American Constitution Society for Law and Policy , an organization of lawyers and law students in the United States
*American Cryonics Society , non-profit corporation that supports and promotes research and education into cryonics
*Australian Cinematographers Society
*Australian Computer Society , an association for information and communications technology professionals;Other
*Administration for Children's Services
*Association of Caribbean States
*Adam Carolla Show , American morning radio program
*Adventure Construction Set , a program used to construct Ultima-type videogames
*Alternative compensation system , a way to allow reproduction of digital copyrighted works while still paying the authors and copyright owners
*Australian Customs Service , the Australian Government agency responsible for the Australian border
*American Community Survey , a project of the United States Census Bureau
* "Antichrist Superstar ", a 1996 rock album by Marilyn Manson
*Apolyton Civilization Site , a website for players of the Civilization series of computer games
*Association of Cricket Statisticians and Historians , an association founded England in 1973 to collect cricket data
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