| CTTS | Cable Telecommunications Training Services 
| Others |
| CTTS | Capital of Texas Team Survivor
| Others |
| CTTS | Cellular Therapy and Transplant Section
| Others |
| CTTS | Center for Tokamak Transient Simulation
| Others |
| CTTS | Central Texas Technology Solutions
| Others |
| CTTS | Central Texas Turnpike System
| Others |
| CTTS | Centre for Translation and Textual Studies
| Others |
| CTTS | Certified Tobacco Treatment Specialist
| Others |
| CTTS | Certified Tobacco Treatment Specialists
| Others |
| CTTS | Charge Transfer To Solvent
| Others |
| CTTS | Circle Takes the Square
| Others |
| CTTS | Clinical Trial Tissue Services
| Others |
| CTTS | Complex Tanking Tournament Series
| Others |
| CTTS | Concatenative Text To Speech
| Others |
| CTTS | Conference To Text System
| Others |
| CTTS | Coolant Temperature Thermo Switch
| Others |
| CTTS | Cost and Time Tracking System
| Others |
| CTTS | Creative Technology and Training Solutions
| Others |
| CTTS | Current Trends in Technology and Sciences
| Others |