| Center for Telangana Studies | Academic & Science |
| Continental Theological Seminary | Academic & Science |
| Chrome-Tungsten Steel | Academic & Science |
| Classroom Technology Services | Academic & Science |
| Career Technology Studies | Academic & Science |
| Cell Transplant Society | Academic & Science |
| Cognitive Technology Society | Academic & Science |
| Cash To Spend | Accounts and Finance |
| Sapporo | Airport Code |
| Cheque Truncation System | Banking |
| Complaint Tracking System | Banking |
| Check Truncation Sysytem | Banking |
| Carmichael Training Systems | Business |
| Conveyorized Two Station | Business |
| Child Transport System | Business |
| Chicago Telephone Service | Business |
| Call The Shots | Business |
| Customer and Trading Support | Business |
| Cordless Tools Store | Business |
| Chicago Telephone Supply | Business |
| C T S Corporation | Business |
| Copper Tube Size | Business |
| Cylinder Tine Separation | Business |
| Chirstmas Tree Snow | Business |
| Corporate Translation Services | Business |
| Certified Tax Specialist | Business |
| Coolant Temperature Sensor | Chemistry |
| Center for Traffic Statistics | Community |
| Christian Team Server | Community |
| Community Television Station | Community |
| Celebrate The Spirit | Community |
| Catholic Truth Society | Community |
| Critical Thinking Skills | Community |
| Crossroads Television System | Community |
| Christian Theological Seminary | Community |
| Computer and Technology Showcase | Community |
| Chinese Television System | Community |
| Connecting the Schools | Community |
| Consolidated Tape System | Computer Hardware |
| Carpal Tunnel Syndrome | Computing |
| Conformance Testing Service | Computing |
| Computer Telephony Solution | Computing |
| Contract Technical Services | Computing |
| Complete Technology Solutions | Computing |
| Communication Technology Services | Computing |
| Call Center Ticket System | Computing |
| Character Tabulation Set | Computing |
| Clock Tree Synthesis | Computing |
| Component Transaction Servers | Computing |
| Common Type System | Computing |
| Computer Type Setting | Computing |
| Cics Transaction Server | Computing |
| Common Transport Semantics | Computing |
| Composition Time Stamp | Computing |
| Cyberlink Task Scheduler | Computing |
| Customer Technical Support | Computing |
| Command and Telemetry Service | Computing |
| Carphal Tunnel Syndrome | Computing |
| Customer Training Specialist | Computing |
| Creation Time Stamp | Computing |
| Corel Technical Services | Computing |
| Cipher Text Stealing | Computing |
| Communications Technology Satellite | Computing |
| Configuration Technical Specialist | Computing |
| Cyber Test Systems | Computing |
| Citrix Terminal Services | Computing |
| Common Transfer System | Computing |
| Conformance Test System | Computing |
| Click To Search | Computing |
| Consolidated Telecom Services | Computing |
| Permanent Location Contents (abc Programming Language) | File Type |
| Controlled Throttle Shifting | General |
| Canadian Tire Series | General |
| C-Series Touring Sedan | General |
| Craftsman Truck Series | General |
| Compact Touring Series | General |
| Cargobull Trailer Stores | General |
| Catera Touring Sedan | General |
| Central Texas Speedway | General |
| Catalyst Temperature Switch | General |
| Coolant Temperature Switch | General |
| Charge Temperature Sensor | General |
| Connect Telematics Systems | General |
| Certified Telematics Service | General |
| Commodity Transportation Survey | General |
| Center for Transportation Studies | General |
| Correspondence Tracking System | General |
| Cruising and Traffic Support | General |
| Calibra Team Sweden | General |
| Custom Truck Sales | General |
| Cutlass Supreme | General |
| Chain And Triangle Survey | General |
| Color Temperature Straw | General |
| Combined Tactical Systems | General |
| Corvallis Transit System | General |
| Cascade Training Series | General |
| Chicago Theological Seminary | General |
| Cincinnati Test Systems | General |
| Cincinnati Thermal Spray | General |
| Credit for Time Served | General |
| Conti Tire System | General |
| Cadillac Touring Sedan | General |
| Car Top Systems | General |
| Compact Touring Sedan | General |
| Cloth Trimmed Seats | General |
| Charge Temperature Switch | General |
| Carrozzeria Touring Superleggera | General |
| Christ the Shepherd | General |
| Compatibility Test Suite | General |
| Cunningham Trading Systems | General |
| Construction Testing Service | General |
| Construction Testing Services | General |
| Core Text Search | General |
| Container Terminal Salzburg | General |
| Cadet Training Ship | General |
| Collaborative Testing Services | General |
| Common Types System | General |
| Cylinder Tine Separator | General |
| Change Table for Statutes | General |
| Canada Treaty Series | Governmental |
| Cadillac Touring Sport | Governmental |
| Candidate Tracking System | Governmental |
| Cosmic Top Secret | Governmental |
| Counseling and Testing Site | Governmental |
| Cubic Transportation Systems | Governmental |
| Central Travel Summary | Governmental |
| China Travel Service | Governmental |
| Corporate Transportation Specialist | Governmental |
| CHHATARIPUT | Indian Railway Station |
| Clear To Send | Information Technology |
| υπηρεσίες δοκιών συόρφωσης | International |
| Changing The Subject | Internet |
| Certified Technology Specialist | Jobs |
| Certified Temporary Specialist | Jobs |
| Certified Trauma Specialist | Jobs |
| Certified Temporary Staffing | Jobs |
| Cross Table Sampling | Maths |
| Compulsive Traveller's Syndrome | Medical |
| Clinical Technical Support | Medical |
| Carpal Tunnel Syndromes | Medical |
| Cell Therapy Systems | Medical |
| Cardio-Thoracic Surgery | Medical |
| Clinical Trial Studies | Medical |
| Conflict Tactic Scale | Military and Defence |
| Contact Test Set | Military and Defence |
| Change Tracking System | Military and Defence |
| Common Targeting System | Military and Defence |
| Combat Training Squadron | Military and Defence |
| Commodity Tracking System | Military and Defence |
| Course To Steer | Military and Defence |
| Cluster Testing System | Networking |
| Component Transaction Server | Networking |
| Communication Terminal Synchronous | Networking |
| Convert Texture Sequence | Physics Related |
| (West African) Command Clerks Training School | Regional |
| New Chitose Airport, Chitose, Sapporo, Hokkaido, Japan | Regional |
| Careflow Transcription Suite | Softwares |
| Cognizant Technology Solutions | Softwares |
| Canadian Technology Satellite | Space Science |
| Communications and Tracking System | Space Science |
| Computer Test Set | Space Science |
| Computerized Training System | Space Science |
| Commercial To Space | Space Science |
| Combined Trading System | Stock Exchange |
| Connected Technology Solutions | Technology |
| Consolidated Technology Services | Technology |
| Call Tracking System | Telecommunication |
| Cordless Telephone System | Telecommunication |
| New Chitose Airport | Transport & Travel |
| Core Treasury System | Uttarakhand Government |