ATC may refer to:

Medicine

* Acute traumatic coagulopathy * Anaplastic thyroid cancer, a form of thyroid cancer * Anatomical Therapeutic Chemical Classification System, a WHO drug classification system * Certified athletic trainer, post-nominal letters

Organizations

Military

* Air Training Command, the predecessor to Air Education and Training Command in the United States Air Force * Air Training Corps, United Kingdom, for cadets * Air Transport Command, a United States Army Air Force command during World War II * New Zealand Air Training Corps, for cadets

Education

* Academy for Technology and the Classics, a charter school in Santa Fe, New Mexico, US * Advanced Technology College, a community college in Daytona Beach, Florida, US * Applied Technology College, one of several campuses in the Utah College of Applied Technology system *Ambrose Treacy College, high school in Brisbane, Australia

Other organizations

* Alabang Town Center, a shopping mall in Muntinlupa, Philippines * Altice (company), Luxembourg-based multinational telecoms company by Euronext stock symbol * American Technology Corporation, former name of LRAD Corporation, a sound technology company * American Thermoplastic Company, a United States plastics manufacturer * American Tobacco Campus, a former property of the American Tobacco Company#Redevelopment, American Tobacco Company in Durham, North Carolina, US * American Tractor Corporation, a 1950 manufacturer of crawler tractors which merged into Case *American Truck Company * American-Turkish Council, a business association promoting U.S.-Turkish relations * Appalachian Trail Conservancy, a United States nonprofit organization * Applied Technology Council, a nonprofit founded in 1973 which studies the effects of hazards on the built environment * Aquarian Tabernacle Church, a Wiccan church founded in 1979 * Argentina Televisora Color, former name of the television network Televisión Pública (Canal 7) * Atlanta Track Club, a non-profit running organization based in Atlanta, Georgia * Atlanta Transit Company, former rail operator in Georgia, United States *Auckland Theatre Company, professional theatre company, New Zealand * Australian Telecommunications Corporation, formerly Australian Telecommunications Commission * Automobile and Touring Club for United Arab Emirates, a member of the Fédération Internationale de l'Automobile

Science and technology

* 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 * UK Astronomy Technology Centre, based at the Royal Observatory in Edinburgh, Scotland, part of the Science and Technology Facilities Council * Athletic Trainer Certified, a healthcare professional board certified in athletic training * Automatic taxonomy construction, a branch of natural language processing, which applies software programs to generate taxonomical classifications from a body of texts. * Average total cost, in economics * Automatic tool changer, a mechanism allowing CNC machines to switch cutting tools without operator intervention. * Alternate technical concept, in engineering and construction. * USENIX Annual Technical Conference, an annual peer-reviewed conference * ATC, a codon for the amino acid isoleucine

Transport

* Advanced transportation controller, a standardization effort as part of the United States Department of Transportation's Intelligent transportation system * All-terrain cycle, a type of All-terrain vehicle#Three-wheeled ATVs, all-terrain vehicle * Alvarado Transportation Center, an intermodal transit center in New Mexico * American Truck Corporation, a USA importer and/or assembler of Tatra and Kraz trucks. * Armored Troop Carrier (LCM), used in the Vietnam War * Automatic traffic counter, see traffic count

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

Games and hobbies

* Armacham Technology Corporation, a fictional technology developer in the video game ''F.E.A.R.'' * Artist trading cards, individual fine art miniatures * 'Any to Come', a type of conditional bet; See Glossary of bets offered by UK bookmakers#'Any to Come' (ATC) or 'if cash' bets, Glossary of bets offered by UK bookmakers

Sports

* SV Atlétiko Tera Corá, a Bonaire football club

Other uses

* ATC_(loudspeaker_manufacturer), Acoustic Transducer Company, a British loudspeaker and electronic equipment manufacturer * ''All Things Comedy'', a comedy company and podcast aggregate * ''All Things Considered'', a news show on National Public Radio in the United States * Against the Current (band), an American pop rock band * Argentina Televisora Color, former name for Televisión Pública in Argentina * A Touch of Class (band), a pop music group from Germany and the UK (1999–2003) * Agreement on Textiles and Clothing, a World Trade Organization regulation for trade in textiles and garments * Audio Tele-Conference * ATC (belay device), a type of belay device for rock climbing * Authorization to Carry, a permit issued in Canada to carry Restricted firearms and Prohibited handguns