AC, A.C., A/C, or Ac most often refers to:

  • Air conditioning, often abbreviated as A/C
  • Alternating current, a type of electrical current in which the current repeatedly changes direction

AC, A.C., A/C, or Ac may also refer to:

Arts and entertainment

Gaming

  • Ace Combat, a series of combat flight simulator games
  • Animal Crossing, a series of community simulation games
  • Anonymous;Code, a visual novel in the Science Adventure series
  • Another Code, a series of adventure games
  • Armored Core, a series of mecha-based third person shooter games
  • Asheron's Call, a fantasy massively multiplayer online role-playing game
  • Assassin's Creed, a series of action-adventure games
  • Assetto Corsa, a racing simulator game
  • Astral Chain, an action-adventure hack and slash game
  • Armor class, a combat-related parameter in the Dungeons & Dragons role playing game system
  • A.C., a character in Fortnite: Save the World

Music

  • A. C. Newman, solo stage name for Canadian musician Carl Newman
  • AC/DC, an Australian rock band formed in Sydney in 1973
  • Adult contemporary music, a genre description used mainly in radio broadcasting
  • Adult Contemporary (chart)
  • Anal Cunt, an American musical group

Other media

  • AC Comics, a comic book publisher established in 1969
  • A.C. Slater, a fictional character in the American sitcom Saved by the Bell
  • After Colony, an alternate timeline in the Gundam metaseries for the universe of Gundam Wing
  • AC, the name of the "ultimate computer" in Isaac Asimov's novel The Last Question
  • Asianovela Channel, a defunct Filipino TV channel

Organizations

Businesses

  • AC Cars, a British specialist automobile manufacturer
  • AC Spark Plug, Delco, AC-Delco, and ACDelco, automotive parts brands owned by General Motors
  • AC Hotels, a hotel chain owned by Marriott International
  • AC Restaurants, a hotel and restaurant chain in the Benelux
  • Air Canada, the flag carrier and largest airline of Canada (IATA code AC)
  • Allis-Chalmers, a former industrial conglomerate
  • Anderson, Clayton and Company, former American cotton trading firm
  • Associated Content, an online publisher and distributor of original content
  • Ayala Corporation, a holding company (Philippine Stock Exchange symbol AC)

Politics

  • Action Congress of Nigeria, a political party
  • Advisory Council on Youth, a non-governmental decision-making body in the Council of Europe.
  • Alternative for Change (Alternativa por el Cambio), a political party in Nicaragua
  • Coast Alliance (Alianza Costeña), a former regional political coalition in Nicaragua

Other organizations

  • AC – The Danish Confederation of Professional Associations, an umbrella organisation for several Danish trade unions
  • AC Transit, a regional public transit agency in the San Francisco Bay Area
  • Ad Council Japan (AC Japan), an organization that distributes Japanese public service announcements
  • Athletics Canada, the governing body of athletics in Canada
  • Civic Alliance Foundation (Alianţa Civică), a Romanian non-governmental organization
  • Anthrocon, a furry convention held in Pittsburgh, Pennsylvania, US
  • Audit Commission (Hong Kong), a government department in Hong Kong Special Administrative Region
  • Aryan Circle, a white supremacist, Neo-Nazi prison gang spread throughout many U.S. correctional facilities

People

  • AC Bonifacio (born 2002), a Philippine-Canadian actress, singer and dancer
  • A. C. Green (born 1963), retired professional basketball player
  • A. C. Grayling (born 1949), British philosopher
  • Al Cowlings (born 1947), retired American football player
  • Nickname for Andreas Christensen (born 1996), Danish footballer

Places

  • .ac, Internet top-level domain name for Ascension Island
  • Aachen, a spa town in North Rhine-Westphalia, Germany
  • Acre (state), Brazil
  • Aleksandrovac, Serbia (vehicle registration plate code AC)
  • Antigua and Barbuda, obsolete two-letter FIPS and NATO codes
  • Atlantic City, New Jersey, US

Ranks, titles, and awards

  • Aelod y Cynulliad, title for Members of the National Assembly for Wales
  • Aircraftman, an air forces rank
  • Ashoka Chakra (military decoration), India's highest peacetime military decoration
  • Assistant Commissioner of Police of the Metropolis, a rank in London's Metropolitan Police
  • Companion of the Order of Australia
  • First assistant camera or Second assistant camera, in film-making
  • Aviation Cadet, a military rank sometimes written as A/C

Science and technology

Biology and medicine

  • Acromioclavicular joint (AC joint), the shoulder junction between the scapula and the clavicle
  • Adenylate cyclase, a lyase enzyme
  • Adriamycin and cyclophosphamide, a chemotherapy regimen used to treat breast cancer
  • Ante cibum (ac), Latin for "before meal", commonly seen in medical prescriptions
  • Anterior commissure, a bundle of nerve fibers connecting the two temporal lobes of the brain
  • Anterior cruciate ligament (AC ligament or ACL), a major ligament in the knee
  • Appropriateness criteria, when it is appropriate to perform a medical procedure or service
  • Assist control, a former term for continuous mandatory ventilation, a mode of mechanical ventilation
  • Adenocarcinoma, a type of cancerous tumor
  • Allergic conjunctivitis, inflammation of the conjunctiva

Chemistry

  • Acetyl group, a functional group in chemistry
  • Actinium, symbol Ac, a chemical element
  • Hydrogen cyanide, AC in chemical weapons classification

Computing and telecommunications

  • .ac, Internet top-level domain name for Ascension Island
  • .ac (second-level domain), Internet second-level domain used to denote academic institutions in many countries
  • AC (complexity), a hierarchy of complexity classes found in circuit complexity
  • AC, initialism of access control
  • Artificial consciousness, a field related to artificial intelligence and cognitive robotics
  • Authorization certificate or attribute certificate, a digital permission to use a service or resource
  • Arithmetic coding, a form of entropy encoding used in lossless data compression
  • Alternating component a.k.a. AC coefficient in discrete cosine transform
  • IEEE 802.11ac-2013, a wifi standard using 5 GHz, released in Dec 2013

Meteorology

  • Altocumulus cloud, a medium-level cloud type
  • Anticipated convection, convective outlooks issued by the U.S. National Weather Service

Other uses in science and technology

  • Air conditioning, technologies for altering the temperature and humidity of air
  • Across corners (A/C), a measure of external diameter of hexagonal nuts
  • Alternating current, a type of electric current
  • AC power, a net transfer of energy over a complete cycle of the alternating current waveform
  • Asphalt concrete, a type of road or path surfacing
  • Average cost, in economics
  • Axiom of choice, a mathematical concept in set theory
  • A US Navy hull classification symbol: Collier (AC)

Other uses

  • Ac (rune) (ᚪ), a rune of the Anglo-Saxon fuþorc and a continuation of the Elder Fuþark ansuz
  • Abkhazian Cup, football cup competition in Abkhazia
  • AC Milan, an Italian football club based in the city of Milan
  • Acre, a unit of area with the symbol ac
  • Advisory circular, a publication to provide guidance for compliance with airworthiness regulations
  • After Christ, known as the Common Era (CE)
  • Ante Christum or A.C., a Latin term meaning "before Christ"
  • Antichrist, a Biblical prophecy about one who will oppose Jesus Christ and substitute himself in Christ's place
  • Appeal Cases, or A.C., a UK law reporter covering decisions of the House of Lords, Supreme Court, Privy Council, and Court of Appeal
  • Ancol railway station, a railway station in Jakarta, Indonesia
  • Ards Circuit, motorsport racing circuit
  • Armor class, a common property in role playing games used to determine the amount of armor a character has
  • Army Corps, an operational formation, sometimes known as a field corps, which consists of two or more divisions
  • Atlantic College, an international IB Diploma Programme residential Sixth Form College in the Vale of Glamorgan in Wales
  • Auto Calesa, a war-time short-body version of the Philippine jeepney

See also

  • AC/DC (disambiguation)