| CETS | Center for European and Transatlantic Studies 
| Others |
| CETS | Centre for European and Transition Studies
| Others |
| CETS | Chemical energy transmission
| Others |
| CETS | Child Exploitation Tracking System
| Others |
| CETS | Childcare Education and Training Support
| Others |
| CETS | Childcare Employment and Training Support
| Others |
| CETS | Classroom and Event Technology Support
| Others |
| CETS | Classroom and Events Technology Support
| Others |
| CETS | Classroom Educational Technology Services
| Others |
| CETS | Computing and Educational Technology Services
| Others |
| CETS | Continuing Education and Training Services
| Others |
| CETS | Contract Entry and Tracking System
| Others |
| CETS | Contractor Engineering Technical Services
| Others |