ATC

• A Touch of Class (band)
• ATC (belay device)
• Academy for Technology and the Classics
• Adult Third Culture Kids
• Advanced Technology College
• Advanced transportation controller
• Against the Current (band)
• Agreement on Textiles and Clothing
• Air Tanzania Corporation
• Air Training Command
• Air Training Corps
• Air Transport Command
• Air traffic control
• Air traffic controller
• All Things Comedy
• All Things Considered
• All-terrain vehicle
• Altice (company)
• Alvarado Transportation Center
• American Technology Corporation
• American Thermoplastic Company
• American Tobacco Company
• American Tractor Corporation
• American Truck Company
• American Truck Corporation
• American-Turkish Council
• Anaplastic thyroid cancer
• Anatomical Therapeutic Chemical Classification System
• Ancillary Terrestrial Component
• Appalachian Trail Conservancy
• Applied Technology Council
• Aquarian Tabernacle Church
• Argentina Televisora Color
• Armacham Technology Corporation
• Armored Troop Carrier (LCM)
• Artist trading cards
• Athletic Trainer Certified
• Atlanta Track Club
• Atlanta Transit Company
• Audio Tele-Conference
• Australian Telecommunications Corporation
• Authorization to Carry
• Automatic taxonomy construction
• Automatic tool changer
• Automatic train control
• Average total cost
• Fédération Internationale de l'Automobile
• Glossary of bets offered by UK bookmakers
• New Zealand Air Training Corps
• SV Atlétiko Tera Corá
• UK Astronomy Technology Centre
• USENIX Annual Technical Conference
• Utah College of Applied Technology