| Advanced Technical Credit | Academic & Science |
| Advanced Technology Center | Academic & Science |
| Athletic Trainer Certified | Academic & Science |
| Agricultural Telematics Centre | Academic & Science |
| Agricultural Technology Center | Academic & Science |
| Academy for Technology and the Classics | Academic & Science |
| Albany Technical College | Academic & Science |
| Atlanta Technical College | Academic & Science |
| Accountancy Training Centre | Accounts and Finance |
| Average Total Costs | Accounts and Finance |
| Average Total Cost | Accounts and Finance |
| Apex Tool Company | Business |
| Automatic Transfer Control | Business |
| Advanced Telecommunications Corporation | Business |
| Automatic Temperature Control | Business |
| Atlantic Coal | Business |
| A Touch of Class | Business |
| Argo Turboserve Corporation | Business |
| AMTEC, Inc. | Business |
| Above Top Center | Business |
| Ancient Traditional Concept | Business |
| Automatic Tube Compensation | Business |
| Advanced Thermodynamics Corporation | Business |
| Average Time to Completion | Business |
| Automatic Tool Changer | Business |
| Authorized Training Center | Business |
| Cycle Country Accessories Corporation | Business |
| Advanced Technology Centre | Business |
| Automated Temperature Control | Business |
| American Tractor Company | Business |
| Authorized Training Centre | Business |
| Adaptive Team Collaboration | Business |
| Auburn Towing Company | Business |
| American Transmission Company | Business |
| Advanced Technology Consortium | Business |
| American Thermoplastic Company | Business |
| American Tobacco Company | Business |
| American Tractor Corporation | Business |
| Auto Transport City | Business |
| Astute Trainers and Consultants | Business |
| Arizona Theatre Company | Business |
| Accounting Technician Certificate | Business |
| Aluminum Trailer Company | Business |
| Advanced Technology Consulting | Business |
| Athletic Training Certification | Certifications |
| Alcohol Type Concentrate | Chemistry |
| Automatic Temperature Compensation | Chemistry |
| Active Thermal Convection | Chemistry |
| Asher Tobin Chodos | Community |
| anti-platelet Trialists' Collaboration | Community |
| American TV and Communications | Community |
| Almost Total Conversion | Community |
| Appalachian Trail Conference | Community |
| Aquarian Tabernacle Church | Community |
| Appalachian Trail Conservancy | Community |
| Adult Training Centre | Community |
| About The Creators | Community |
| All The Children | Community |
| Another Traveling Circus | Community |
| Arctic Technology Conference | Community |
| Audio Tele-Conference | Community |
| Asian Triple Club | Community |
| Analog Traffic Channel | Computer and Networking |
| Address Translation Control | Computing |
| All Things Considered | Computing |
| Advanced Transfer Cache | Computing |
| Abstract Test Case | Computing |
| Artist trading cards | Computing |
| Advanced Technology Complex | Computing |
| Area Technology Center | Computing |
| Art Technology and Culture | Computing |
| Academic Technology Center | Computing |
| Advanced Technologies Center | Computing |
| Adhesives Technology Corp | Computing |
| Address Translation Controller | Computing |
| Austrian Technology Corporation | Computing |
| Advanced Technology Council | Computing |
| Advanced Telecommunications Component | Computing |
| Adaptive Transform Coding | Computing |
| Advanced Technologies for Communications | Computing |
| Atm Transfer Capability | Computing |
| Autonomic and Trusted Computing | Computing |
| Autodesk Training Center | Computing |
| Advanced Threat Control | Computing |
| Airport Time Capsule | Computing |
| Air Training Corps | Country Specific |
| Aiken Technical College | Educational Institute |
| Albany Technical College, Albany, Georgia | Educational Institute |
| Advanced Technology College | Educational Institute |
| Atlantic Technical College | Educational Institute |
| Ampere Time Counter | Electronics |
| Automatic Temperature Compensator | Electronics |
| American Transmission Co | General |
| Automatic Traction Control | General |
| All Terrain Case | General |
| Alcohol and Tobacco Commission | General |
| Automatic Torque Coupling | General |
| Active Torque Control | General |
| Auto Tuning Centrum | General |
| Active Traction Control | General |
| Adaptive Transmission Control | General |
| Asian Transmission Corporation | General |
| Active Tilt Control | General |
| Active Transfer Case | General |
| Automatic Transfer Case | General |
| Automatic Traffic Counter | General |
| Active Trace Control | General |
| Acceleration Torque Control | General |
| Automotive Technology Centre | General |
| After Top Center | General |
| Adaptive Traffic Control | General |
| Automotive Technology Certificate | General |
| Apeldoorn The Craziest | General |
| Audi Twin Cup | General |
| Active Temperature Coefficient | General |
| Australian Targa Championship | General |
| Automobile Test Center | General |
| Approved Tachograph Center | General |
| Auto Trader Classics | General |
| All Terrain Crane | General |
| Aasa Technology Council | General |
| All That's Crazy | General |
| Automated Toll Collection | General |
| Acadian Thunderbird Club | General |
| Active Torque Coupling | General |
| Air Temperature Control | General |
| Automatic Transmission Control | General |
| Active Twin Clutch | General |
| Auto Truck Clinic | General |
| Auto Truck Center | General |
| Advanced Traction Control | General |
| All Terrain Concept | General |
| Automatic Torque Control | General |
| Asociacion de Transportadores de Carga | General |
| Automotive Trade Center | General |
| Automotores Toyota Colombia | General |
| Artist Trading Card | General |
| Airlines Too Confident | General |
| A Terrible Cornhead | General |
| Armored Troop Carrier | General |
| American Technical Ceramics | General |
| Advanced Test Concepts | General |
| Assess Test and Consult | General |
| Art Trading Card | General |
| Author Title and Call | General |
| A Triginta Conditum | General |
| Automatically Tool Change | General |
| Air Tanzania Corporation | General |
| A Type Certificate | General |
| Aircraft Task Cards | General |
| Automotive Training Center | General |
| Avondale Type Co | General |
| Avocado Turkey Cheese | General |
| Automatic Tool Change | General |
| Augmented Traffic Control | General |
| Atlantic Technical Center | General |
| Automatic Transfer Carrier | General |
| Truck Covers | General |
| Automatic Tone Control | General |
| Air Traffic Controllers | General |
| Auto Traffic Classifier | General |
| Automotive Technology Career | General |
| Access to Care | General |
| Aviation Training Center | General |
| Automatic Traffic Control | Governmental |
| Alcohol and Tobacco Control | Governmental |
| All Terrain Cycle | Governmental |
| Air Tactical Communications | Governmental |
| Australian Tax Cases | Governmental |
| Addicted To Coke | Governmental |
| All Terrain Collection | Governmental |
| Available Transfer Capacity | Governmental |
| AMTRAC Transit Coach | Governmental |
| Automatic Train Control | Governmental |
| Automatic Tourque Control | Governmental |
| Airport Traffic Congestion | Governmental |
| Authorization to Carry | Governmental |
| Aviation Electronics Technician Chief Petty Officer | Governmental |
| Advanced Transportation Controller | Governmental |
| Articulation and Transfer Council | Governmental |
| ARTS COLLEGE | Indian Railway Station |
| American-Turkish Council | International |
| Automobile and Touring Club | International |
| Argentina Televisora Color | International |
| Above The Clouds | Internet |
| Afghan Technical Consultant | Jobs |
| Air Traffic Controller | Jobs |
| Automation Tool Company | Measurement Unit |
| Around The Clock | Medical |
| Anatomical Therapeutic Chemical | Medical |
| Anaplastic thyroid cancer | Medical |
| American Transplant Congress | Medical |
| Anime Topic Chat | Messaging |
| Awesome Thinking Crazy | Messaging |
| Any To Come | Messaging |
| Air Transport Consultants | Messaging |
| Attack The Cripple | Military and Defence |
| Air Transport Command | Military and Defence |
| Aberdeen Test Center | Military and Defence |
| Advanced Training Cadet | Military and Defence |
| Air Threat Conference | Military and Defence |
| Air Transportable Clinic | Military and Defence |
| Active Training Cell | Military and Defence |
| Army Training Center | Military and Defence |
| Air Traffic Control | Military and Defence |
| Air Training Command | Military and Defence |
| Automatic Target Cueing | Military and Defence |
| Army Tactical Center | Military and Defence |
| Active Thermal Cooling | Physics Related |
| Automatic Temperature Conversion | Physics Related |
| Arthur's Town, Bahamas | Regional |
| Australian Transport Council | Regional |
| Atlanta Transit Company | Regional |
| Australian Telecommunications Corporation | Regional |
| Author The Computer | Softwares |
| Advanced Tactical Center | Softwares |
| Ahead of Time Compilation | Softwares |
| Allbase Turbo Connect | Softwares |
| Absolute Time Command | Space Science |
| Archery Training Class | Sports |
| Athletic Training and Conditioning | Sports |
| Against The Clock | Sports |
| Achilles Track Club | Sports |
| Applied Technology Council | Technology |
| Applied Technology Center | Technology |
| Austin Technology Council | Technology |
