| Acronym | Definition |
|---|
| CETS | Carbon Emissions Trading Scheme (Australia) |
| CETS | Child Exploitation Tracking System (Canada) |
| CETS | Church of England Temperance Society |
| CETS | Commission on Engineering and Technical Systems |
| CETS | Continuing Education and Training Service (UK) |
| CETS | Contractor Engineering & Technical Services |
| CETS | Commonwealth Electronic Tender System (Australia) |
| CETS | Cost-Effective Targeting System |
| CETS | Center for Education Technology Services |
| CETS | Conference Europeenne des Télécommunications par Satellites (French: European Conference on Satellite Communications) |
| CETS | Civilian Engineering & Technical Services |
| CETS | Certified Employment Training Specialist |
| CETS | Clinical Especializada para Evaluaciones y Tratamientos Psicologicos |
| CETS | Connector Environmental Test Stand |
| CETS | Control Element Test Stand |
| CETS | Compact Engine Test Stand |
| CETS | College of Engineering Technology and Sciences (Islamabad, Pakistan) |
| CETS | Communicative Education Training System |