| CTC(S) | Circulating Tumor Cell(S) 
| Others |
| CTCS | Calvary Temple Christian School
| Others |
| CTCS | Carcass Tension Control System
| Others |
| CTCS | Caribbean Technological Consultancy Services
| Others |
| CTCS | Category Theory and Computer Science
| Others |
| CTCS | Central Texas Christian School
| Others |
| CTCS | Central Traffic Control System
| Others |
| CTCS | Cerberus Test Control System
| Others |
| CTCS | Cheque Truncation and Conversion System
| Others |
| CTCS | Chery Technical Center Shanghai
| Others |
| CTCS | Chinese Train Control System
| Others |
| CTCS | Classic Thunderbird Club of Scandinavia
| Others |
| CTCS | Classic Thunderbird Club Switzerland
| Others |
| CTCS | Communications Technician Senior Chief Petty Officer
| Others |
| CTCS | Condenser Tube Cleaning System
| Others |
| CTCS | Container Terminal Control System
| Others |
| CTCS | Cryptologic (technician) Senior Chief Petty Officer
| Others |
| CTCS | Custom Tab Control Style
| Others |