CAS may refer to:

Organisations

California Academy of Sciences The California Academy of Sciences is a research institute and natural history museum in San Francisco, San Francisco, California, that is among the largest List of natural history museums, museums of natural history in the world, housing over ...

, a major natural history museum and center for scientific research * Career Academies of Seminole, a program run by Pinellas County Schools in

Florida Florida ( ; ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders the Gulf of Mexico to the west, Alabama to the northwest, Georgia (U.S. state), Georgia to the north, the Atlantic ...

* Casablanca American School, a coed private prep

school A school is the educational institution (and, in the case of in-person learning, the Educational architecture, building) designed to provide learning environments for the teaching of students, usually under the direction of teachers. Most co ...

Casablanca Casablanca (, ) is the largest city in Morocco and the country's economic and business centre. Located on the Atlantic Ocean, Atlantic coast of the Chaouia (Morocco), Chaouia plain in the central-western part of Morocco, the city has a populatio ...

Morocco Morocco, officially the Kingdom of Morocco, is a country in the Maghreb region of North Africa. It has coastlines on the Mediterranean Sea to the north and the Atlantic Ocean to the west, and has land borders with Algeria to Algeria–Morocc ...

* Casualty Actuarial Society, a professional society of actuaries in the

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

* Centre for Astrophysics and Supercomputing, a research center at Swinburne University in

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

Chemical Abstracts Service Chemical Abstracts Service (CAS) is a division of the American Chemical Society. It is a source of chemical information and is located in Columbus, Ohio, United States. Print periodicals ''Chemical Abstracts'' is a periodical index that provid ...

, a division of the

American Chemical Society The American Chemical Society (ACS) is a scientific society based in the United States that supports scientific inquiry in the field of chemistry. Founded in 1876 at New York University, the ACS currently has more than 155,000 members at all ...

which produces bibliographic and chemistry databases *

Chinese Academy of Sciences The Chinese Academy of Sciences (CAS; ) is the national academy for natural sciences and the highest consultancy for science and technology of the People's Republic of China. It is the world's largest research organization, with 106 research i ...

, the national academy for the natural sciences of

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

* Combined Associated Schools, an association of

private schools A private school or independent school is a school not administered or funded by the government, unlike a public school. Private schools are schools that are not dependent upon national or local government to finance their financial endowme ...

Sydney Sydney is the capital city of the States and territories of Australia, state of New South Wales and the List of cities in Australia by population, most populous city in Australia. Located on Australia's east coast, the metropolis surrounds Syd ...

* Contemporary Art Society, UK * Contemporary Art Society (Australia) **Contemporary Art Society,

Adelaide Adelaide ( , ; ) is the list of Australian capital cities, capital and most populous city of South Australia, as well as the list of cities in Australia by population, fifth-most populous city in Australia. The name "Adelaide" may refer to ei ...

, later the Contemporary Art Centre of South Australia * Contemporary Arts Society,

Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...

* Court of Arbitration for Sport, an international arbitration body set up to settle disputes related to sports * Children's Aid Society, a private charity in

New York City New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive w ...

* Children's Aid Society (Ontario), a Canadian government organization * Christchurch Adventist School, a Seventh-day Adventist school in

New Zealand New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of isla ...

* Civil Aid Service, a

Hong Kong Hong Kong)., Legally Hong Kong, China in international treaties and organizations. is a special administrative region of China. With 7.5 million residents in a territory, Hong Kong is the fourth most densely populated region in the wor ...

Civil Aid agency * Cinema Audio Society, an association of sound professionals in the motion picture and television industry * Council for the Advancement of Standards in Higher Education, a consortium of professional student development organizations in higher education * Connecticut Association of Schools, the governing body for secondary school athletics and other competitions in

Connecticut Connecticut ( ) is a U.S. state, state in the New England region of the Northeastern United States. It borders Rhode Island to the east, Massachusetts to the north, New York (state), New York to the west, and Long Island Sound to the south. ...

, US * Czech Academy of Sciences, formerly Academy of Sciences of the

Czech Republic The Czech Republic, also known as Czechia, and historically known as Bohemia, is a landlocked country in Central Europe. The country is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the south ...

* Český atletický svaz, Czech Athletics Federation * ''Comite d'action socialiste'' - Socialist Action Committee, a

French Resistance The French Resistance ( ) was a collection of groups that fought the German military administration in occupied France during World War II, Nazi occupation and the Collaboration with Nazi Germany and Fascist Italy#France, collaborationist Vic ...

network

Computing

* CAS latency (column address strobe or column address select), a latency in reading computer memory * Central Authentication Service, a single sign-on protocol * Cloud Analytic Services, a server that provides the cloud-based, run-time environment for data management and analytics with SAS (software) * Code Access Security in the Microsoft .NET framework * Compare-and-swap, a special CPU instruction, an atomic instruction used in multithreading to achieve synchronization *

Computer algebra system A computer algebra system (CAS) or symbolic algebra system (SAS) is any mathematical software with the ability to manipulate mathematical expressions in a way similar to the traditional manual computations of mathematicians and scientists. The de ...

, a software program that facilitates symbolic mathematics * Conditional access system, a technology used in set-top boxes to allow conditional viewing of TV channels *

Content-addressable storage The content-addressable network (CAN) is a distributed, decentralized Peer-to-peer, P2P infrastructure that provides hash table functionality on an Internet-like scale. CAN was one of the original four distributed hash table proposals, introduced c ...

, a data storage mechanism * Copyright Alert System, also known as the 'six strikes' program * Cycle-accurate simulator, a computer program that simulates a microarchitecture in a cycle-accurate manner

Science and medicine

* Calcium sulfide (CaS), a chemical compound * Coronary artery spasm (CAS) * Carotid artery stenting, endovascular surgery of the carotid artery *

Cassiopeia (constellation) Cassiopeia () is a constellation and Asterism (astronomy), asterism in the northern sky named after the vain queen Cassiopeia (mother of Andromeda), Cassiopeia, mother of Andromeda (mythology), Andromeda, in Greek mythology, who boasted about her ...

(Cas), standard astronomical abbreviation * Cells Alive System *

, a division of the American Chemical Society which produces bibliographic and chemistry databases ** CAS Registry Number, unique numerical identifiers for chemical substances * Cognitive Assessment System, an academic assessment test given to children * Complex adaptive system, special cases of complex systems * ''Computer Aided Surgery'' (journal) * Computer-assisted surgery, use computer technology in surgery * Critical animal studies, an interdisciplinary field in the humanities and social sciences * Critical autism studies * Hartley kernel, which also is known as the ''cosine and sine'' function * Cis-abienol synthase, an enzyme * CRISPR-associated (Cas) proteins, involved in the prokaryotic immune system and genome editing * CAS parameters, an image analysis method typically used in astronomy * Childhood apraxia of speech, a developmental speech disorder

Entertainment and sports

Calling All Stations ''...Calling All Stations...'' (stylised in all capitals) is the fifteenth and final studio album by English rock band Genesis. It was released 1 September 1997 by Virgin Records and is their only album featuring Scottish singer Ray Wilson as ...

, the fifteenth and final studio album by Genesis * Cigarettes After Sex, an American

ambient pop Ambient music is a genre of music that emphasizes Musical tone, tone and atmosphere over traditional Musical form, musical structure or rhythm. Often "peaceful" sounding and lacking Musical composition, composition, beat, and/or structured melod ...

band * Classic Arts Showcase, an American television channel promoting the fine arts * Cowboy action shooting, a competitive shooting sport

Military

* Chief of the Air Staff, the professional head of the air force in some Commonwealth nations * Close air support, a military tactic whereby aircraft are utilized to support friendly forces * Combat armor suit, a specialized suit that provides powered armor * Cost Accounting Standards, accounting requirements for larger defense and government contractors (United States)

Aerospace

* Calibrated airspeed, the airspeed shown by an airspeed indicator * Covenant Aviation Security, LLC, a company that provides security services to the aviation industry * Crew-alerting system, the cockpit computer that issues system warnings to pilots * Casablanca–Anfa Airport (IATA code)

Transport

* Castleton railway station, Manchester, England (National Rail station code) * Chicago, Attica and Southern Railroad, a former line in the American states of Indiana and Illinois

Other uses

Certificate of Advanced Study A Certificate of Advanced Study (CAS), also called an Advanced Certificate (AC), Certificate of Advanced Graduate Study (CAGS), or a Certificate of Advanced Professional Studies (CAPS), is a post-Master's academic certificate designed for profession ...

, a postgraduate certificate * Channel-associated signaling, in telecommunications * Citizens Advice Scotland, the umbrella organisation for Citizens Advice Bureaux in Scotland *

Clark Ashton Smith Clark Ashton Smith (January 13, 1893 – August 14, 1961) was an influential American writer of fantasy, horror, and science fiction stories and poetry, and an artist. He achieved early recognition in California (largely through the enthusiasm ...

(1893–1961), American author and artist * Collision avoidance system, an automobile safety system * Controlled American source, a placeholder term used by the Central Intelligence Agency in classified documents to avoid disclosure of specific locations, operations, activities, or individuals * Controlled atmosphere stunning, a method for slaughtering animals * County Antrim Shield, football tournament in Northern Ireland * Creativity, activity, service, the community service aspect of the International Baccalaureate Diploma Programme