CAC may refer to:

Arts

* California Arts Council, a state agency governed by an 11-member council appointed by the Governor and the state Legislature to advance the state through the arts and creativity
* Columbia Arts Center, an arts center located in Vancouver, Washington
* Comics Arts Conference, scholarly conference associated with Comic-Con International
* Contemporary Arts Center, 44 East 6th Street, Cincinnati, Ohio 45202
* Ciutat de les Arts i les Ciències (City of Arts and Sciences), an ensemble of five areas in the dry river bed of the now diverted River Turia in Valencia, Spain
* Comics Code Authority

Corporate

* CAC is the ICAO airline designator for Conquest Airlines
* Call Aircraft Company, an aircraft manufacturer in the United States
* Chugach Alaska Corporation, an Alaska Native regional corporation created under the Alaska Native Claims Settlement Act of 1971
* Codex Alimentarius Commission, a body established jointly by the Food and Agriculture Organization of the United Nations and the World Health Organization
* Colonial Ammunition Company, a former New Zealand ammunition company
* Commonwealth Aircraft Corporation, an Australian aircraft manufacturer
* Consolidated Aircraft Corporation

Economics

* CAC 40, a French stock market index
* Capital Account Convertibility, a fiscal policy that centers around the ability to conduct transactions of local financial assets into foreign financial assets freely
* Collective action clause, a clause that allows a supermajority of bondholders to agree a debt restructuring that is legally binding on all holders of the bond
* Certified Acceptance Corporation, a third party coin grading service

Education

* Central Arizona College, a public community college located in Coolidge, Arizona
* Colleges Against Cancer, a program that allows college students, faculty, and staff to work together to bring American Cancer Society programs and services to college communities nationwide
* Commissioner's Academic Challenge, Florida's statewide high school academic tournament
* Cairo American College, A school for Pre-K to 12 grade in Cairo
* Central Arkansas Christian Schools,a private elementary and high school system in Little Rock and North Little Rock, Arkansas

Politics, religion and military

* Campaign Against Censorship, UK political pressure group that opposes censorship and promotes freedom of expression
* Center for the Advancement of Capitalism, a public policy group organized in 1998
* Central Advisory Commission, a political commission of the People's Republic of China
* Central Asian Commonwealth, an organization later renamed to Organization of Central Asian Cooperation
* Coalition against Communalism, a San Francisco Bay area organization formed in 1992 in the wake of the Babri Masjid demolition in Ayodhya
* Combined Arms Center, a U.S. Army component of TRADOC
* CPSU Central Auditing Commission, a supervisory organ within the Communist Party of the Soviet Union
* Common Access Card, U.S. Military Identification card
* Coastal Artillery Corps, an older name for U.S. Army Coastal artillery units
* Christ Apostolic Church

cience and technology

* CaC₂, a chemical compound
* Call Admission Control, a concept that applies only to real time media traffic and not to data traffic
* Carbon Arc Cutting, an arc cutting process
* Citric acid cycle, a series of chemical reactions of central importance in all living cells that use oxygen as part of cellular respiration
* Common Access Card, a United States Department of Defense smartcard issued as standard identification for active duty military personnel and others
* Connection Admission Control, the simple practice of discriminating which traffic is admitted into a network
* Cotation Assistée en Continu, an electronic trading system implemented at the Paris Bourse in the late 1980s
* Criteria air contaminants, a group of air pollutants

ports and games

* Cauliflower Alley Club, a professional wrestling and boxing fraternal organization
* Confederation Africaine de Cyclisme, the African Cycling Confederation, a confederation of cycling's national governing bodies in Africa
* Capital Athletic Conference, an intercollegiate athletic conference affiliated with the NCAA’s Division III
* Command & Conquer series, a Real Time Strategy series of video games
* Cricket Australia Cup, the Australian national second XI cricket competition