ATC or atc may refer to:
Transportation and military
Aviation Air traffic control, a service provided to aircraft by ground-based controllers Air traffic controller, people who expedite and maintain a safe and orderly flow of air traffic in the global air traffic control system Air Tanzania Corporation, the former state-owned airline of Tanzania
Rail Automatic train control, a safety system for railways Automatic and Track Control, a tokenless form of safeworking on single rail lines used in Victoria, Australia Atlanta Transit Company, a former rail operator in Georgia, United States
Other uses in civilian transportation Advanced transportation controller, a standardization effort as part of the U.S. Department of Transportation's Intelligent transportation system All-terrain cycle, a type of all-terrain vehicle Alvarado Transportation Center, an intermodal transit center in New Mexico American Truck Company, an American importer and/or assembler of Tatra and Kraz trucks Automatic traffic counter; see Traffic count American Tractor Corporation, a 1950 manufacturer of crawler tractors which merged into Case Automobile and Touring Club for United Arab Emirates, a member of the Fédération Internationale de l'Automobile
Military Armored Troop Carrier (LCM), used in the Vietnam War Air Transport Command, a United States Army Air Force command during World War II Air Training Command, the predecessor to Air Education and Training Command in the U.S. Air Force Air Training Corps, United Kingdom, for cadets New Zealand Air Training Corps, for cadets
Education Academy for Technology and the Classics, a charter school in Santa Fe, New Mexico, United States Advanced Technology College, a community college in Daytona Beach, Florida, United States Aiken Technical College, a community college in Graniteville, South Carolina, United States Applied Technology College, one of several campuses in the Utah College of Applied Technology system Ambrose Treacy College, a high school in Brisbane, Australia
Science and technology
UK Astronomy Technology Centre, a part of the Science and Technology Facilities Council based at the Royal Observatory in Edinburgh, Scotland Automatic tool changer, a mechanism allowing CNC machines to switch cutting tools without operator intervention American Thermoplastic Company, an American plastics manufacturer American Tobacco Campus, a former property of the American Tobacco Company in Durham, North Carolina, United States Applied Technology Council, a nonprofit organization that studies the effects of hazards on the built environment (founded 1973)
Biology and medicine ATC, a codon for the amino acid isoleucine Acute traumatic coagulopathy, in hematology Anaplastic thyroid cancer, a form of thyroid cancer Anatomical Therapeutic Chemical Classification System, a WHO drug classification system Athletic Trainer Certified, a healthcare professional board-certified in athletic training
Telecommunications
Altice (company), a Luxembourg-based multinational telecoms company by Euronext stock symbol Ancillary Terrestrial Component, a U.S. Federal Communications Commission-approved technique for using a network of cell-phone towers to supplement a Mobile Satellite Service Australian Telecommunications Corporation, formerly Australian Telecommunications Commission Audio Tele-Conference, a telephone call with several participants
Computing and linguistics ACM SIGOPS Annual Technical Conference, an annual peer-reviewed conference Automatic taxonomy construction, a branch of natural language processing, which applies software programs to generate taxonomical classifications from a body of texts Atsahuaca language (ISO 639-3 code: atc)
Electronics American Technology Corporation, a former name for LRAD Corporation, a sound technology company ATC (loudspeaker manufacturer), or Acoustic Transducer Company, a British loudspeaker and electronic equipment manufacturer
Arts, business, and media
Armacham Technology Corporation, a fictional technology developer in the video game F.E.A.R. Auckland Theatre Company, professional theatre company, New Zealand Artist trading cards, individual fine art miniatures All Things Comedy, a comedy company and podcast aggregate Against the Current (band), an American pop rock band A Touch of Class (band), a pop music group from Germany and the UK (1999–2003)
Business Agreement on Textiles and Clothing, a World Trade Organization regulation for trade in textiles and garments Average total cost, in economics Alabang Town Center, a shopping mall in Muntinlupa, Philippines 'Any to Come', a type of conditional bet; See Glossary of bets offered by UK bookmakers American-Turkish Council, a business association promoting U.S.-Turkey relations
Television and radio All Things Considered, a news show on National Public Radio in the United States Argentina Televisora Color, a former name for Televisión Pública, a television network in Argentina
Athletics Appalachian Trail Conservancy, an American nonprofit organization Atlanta Track Club, a nonprofit organization based in Atlanta, Georgia SV Atlétiko Tera Corá, a Bonaire football club ATC (belay device), a type of belay device for rock climbing
Other uses Authorization to Carry, a permit issued in Canada to carry Restricted firearms and Prohibited handguns Aquarian Tabernacle Church, a Wiccan church (founded 1979)
See also Adult Third Culture Kids (ATCK), adults who as children grew up in a culture other than their parents'