CA

CA most often refers to:

• Canada, a country by ISO 3166-1 alpha-2 code
• California, U.S. state by postal abbreviation

CA or ca may also refer to:

Businesses and organizations

Companies

• Air China (IATA airline code CA)
• CA Technologies, a U.S. software company
• Cayman Airways, a Cayman Islands airline
• Channel America, a defunct U.S. television network
• Coal & Allied, Australian mining company
• Continental Airlines, a U.S. airline
• Creative Assembly, a PC game developer
• Crédit Agricole, a major French bank

Government and political

• Bureau of Consular Affairs, a division of the U.S. Department of State
• Canadian Alliance, a former Canadian political party
• Centre Alliance, Australian political party formerly known as Nick Xenophon Team
• Citizens' Alliance, a political party in Trinidad and Tobago
• Combined authority, a local government entity in the United Kingdom
• Commission on Appointments, a body of the Congress of the Philippines
• Conservatives Abroad, overseas wing of the British Conservative Party
• Countryside Alliance, a British political organization
• Court of Appeals
• Customs Administration, an agency of Taiwan

Schools

• Canadian Academy, an international school in Kobe, Japan
• Cary Academy, a private college-preparatory school in Cary, North Carolina, United States
• Claiborne Academy, a private school in Claiborne Parish, Louisiana, United States
• Clarksville Academy, a private college-preparatory school in Clarksville, Tennessee, United States
• Colorado Academy, a private college-preparatory school in Lakewood, Colorado, United States
• Concord Academy, a private college-preparatory school in Concord, Massachusetts, United States
• Connections Academy, an online school based in Baltimore, Maryland, United States
• Culver Academies, a boarding school and summer camp program in Culver, Indiana, United States

In sport

• California Angels, former name of a professional baseball team currently known as Los Angeles Angels
• Club Africain, a multi-sport club from Tunis, Tunisia
• Cricket Australia, the governing body for professional and amateur cricket in Australia
• Cruising Association, a UK membership organization for sailors
• Cycling Australia, the national governing body for bicycle racing in Australia

Other organizations

• Caterers' Association, former UK trade association
• Cocaine Anonymous, a twelve-step program
• Creativity Alliance, an arm of Creativity (religion), a white supremacist organization

In linguistics

• Ca., an abbreviation for circa, meaning "approximately" in Latin
• Ça, French demonstrative pronoun
• Ca (Indic), a glyph in the Brahmic family of scripts
• Ca (Javanese), a letter in the Javanese script
• Catalan language (ISO 639 alpha-2 language code)
• ca, the subdomain for Catalan Wikipedia
• Contrastive analysis, the systematic study of a pair of languages

Mathematics, science, and technology

Biology and medicine

• CA (journal), a medical journal
• Ca (moth), a moth genus
• Ca., abbreviation for Candidatus, for taxonomical names that have not been completely described
• Cancer
• Carbonic anhydrase, a family of enzymes
• Carcinoma, a type of cancer
• Cardiac arrest

Chemistry

• Calcium, symbol Ca, a chemical element
• Catecholamine, an organic compound
• Cellulose acetate, a type of plastic
• Chemical Abstracts, a publication of Chemical Abstracts Service
• Cyanoacrylate, a chemical compound

Mathematics and computing

• Cellular automaton, a discrete mathematical model
• Certificate authority, an entity issuing digital certificates for secure communications
• Correspondence analysis, a multivariate statistical technique
• Cultural algorithm, a type of evolutionary computation in computer science

Other uses in science and technology

• Centiampere (cA), an SI unit of electric current
• Certificate Authority (CA), an entity that issues digital certificates
• CA-class submarine, a World War II Italian midget submarine
• Nissan CA engine, used in smaller Nissan vehicles
• Chromatic aberration, a distortion in optical lenses
• Conditional access, in broadcast engineering
• Conservation agriculture, a food system
• Conversation Analysis, the study of talk in interaction

Places

• Cả River, in Laos and Vietnam
• Province of Cádiz, Spain
• City of Carlisle, United Kingdom, by postcode
• Catamarca Province, Argentina
• Central America
• Tokyo Bay Aqua-Line, a bridge-tunnel across Tokyo Bay area in Japan, numbered as CA

Other uses

• .ca, Internet country code for Canada
• CA-, a road designation for highways part of the Central American highway network
• CA, the official designation for heavy cruiser in the U.S. Navy from 1920–1945
• 'CA': Tactical Naval Warfare in the Pacific 1941-43, a 1973 board wargame that simulates World War II naval combat
• Ca Mè Mallorquí, a dog breed native to Spain
• centiare = 1 square metre
• Character assassination, a deliberate and sustained effort to damage the reputation or credibility of an individual
• Chartered Accountant
• Civil affairs, a term used by both the United Nations and by military institutions
• Communication arts (disambiguation)
• Confidentiality agreement
• Current account (disambiguation), in economics
• A US Navy hull classification symbol: Heavy cruiser (CA)

See also

• Circa (disambiguation)
• Class A (disambiguation)